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- A Bright Red Scream1998 book by Marilee Strong
- A Deadly Wandering2014 book by Matt Richtel
- A General Theory of Love2000 book by Thomas Lewis, Fari Amini, and Richard Lannon
- A Stranger in the Family1997 book by Vincenzo Di Nicola
- A Tremor of Bliss2010 non-fiction book by Mark Judge
- A. T. M. WilsonAlexander Thomson Macbeth Wilson MD RAMC FRCPsych FBPsS FRSA (also known as 'Tommy') (1906
- Aaron Frederick Rasmussen Jr.American physician and professor
- Aaron RosanoffAmerican psychiatrist (1878–1943)
- Abandoned child syndromeMedical condition
- Abandonment (emotional)Subjective emotional state
- Abbreviated Mental Test ScoreMedical diagnostic method
- Abby Rockefeller MauzéAbigail Aldrich Rockefeller Mauzé (November 9, 1903 – May 27, 1976) was an American philan
- Abigail M. HarrisAmerican psychologist
- Abilene paradoxFalse consensus due to communication failure
- Ablative brain surgerySurgical ablation of brain tissue to treat neurological or psychological disorders
- Abnormal psychologyBranch of psychology
- Abnormality (behavior)Behavioral characteristic
- Abortion and mental healthMental effects of undergoing an abortion
- AboulomaniaMental disorder in which the patient displays pathological indecisiveness
- Abraham LowAmerican physician
- Abraham Low Self-Help SystemsNon-profit organization based in Chicago
- Abraham S. LuchinsAmerican Gestalt psychologist
- Abraham TesserAmerican psychologist
- Abram AmselAmerican psychologist (1922-2006)
- Abram KardinerPsychiatrist and psychoanalytic therapist
- AbreactionPsychoanalytical term
- Absent-mindednessInattentive or forgetful behavior
- Absolute thresholdNeuroscience principle
- Absorption (psychology)Personality trait
- Abstinence (psychoanalysis)Abstinence (or the rule of abstinence) is the principle of analytic reticence and/or frust
- Abu Ali ExpressTelegram channel
- AbuliaNeurological symptom of lack of will or initiative
- Abusive supervisionForm of workplace bullying by a supervisor
- Academic buoyancyResilience relating to academic achievement
- Academic discourse socializationAcademic discourse socialization is defined as one's growing process to realize the academ
- Accent perceptionJudgments about a person based on their accent
- Accentuation effectEffect of categorization
- Acceptance and commitment therapyForm of cognitive behavioral psychotherapy
- Accountability partnerPerson who helps another to keep a commitment
- AccusationStatement that claims person or entity commit improper deeds, often directed to guilt
- Acem MeditationMeditation technique
- Acetaminophen autism mass tort2022 US court case
- Achenbach System of Empirically Based AssessmentMedical diagnostic method
- Achievement ideologyConcept in sociology
- Acoustical Society of AmericaThe Acoustical Society of America (ASA) is an international scientific society founded in
- Acting outPerforming an action considered bad
- Action assembly theoryAction assembly theory is a communication theory that emphasizes psychological and social
- Action biasBehavioral tendency towards action over inaction
- Action for HappinessGlobal charitable organization
- Action learningType of approach to problem solving
- Action tendencyPsychological urge to act in a particular manner
- Action-specific perceptionPsychological theory on perception
- Active imaginationConscious method of experimentation
- Active MindsNonprofit mental health organization
- Activity theorySoviet psychological framework
- Activity theory (aging)Theory of aging
- Actor–observer asymmetryCognitive bias
- Actualizing tendencyFundamental element of person-centered therapy
- Ad fatigueIn marketing, ad fatigue is the declining effectiveness of similar advertising to consumer
- Adam EarnheardtAmerican academic and writer
- Adam FerrierAustralian psychologist
- Adam FinePsychologist
- Adam GalinskyAmerican social psychologist (born 1969)
- Adam GrantAmerican psychologist and author (born 1981)
- Adam MarshAdam Marsh (Adam de Marisco; c. 1200 – 18 November 1259) was an English Franciscan, schola
- Adam S. RadomskyCanadian psychologist
- Adaptive behaviorPsychological concept
- Adaptive memoryStudy of evolving memory systems
- Adaptive mentalization-based integrative treatmentAdaptive mentalization-based integrative treatment (AMBIT) is a novel adaptation (by Dicko
- Adaptive performanceAdaptive performance in the work environment refers to adjusting to and understanding chan
- Adaptive unconsciousPsychological theory
- Addenbrooke's Cognitive ExaminationNeuropsychological test to identify cognitive impairment
- Addiction (journal)Academic journal
- Addiction psychologyStudy and treatment of addiction with the tools of psychology
- Addiction vulnerabilityRange of genetic and environmental risk factors for developing an addiction
- Addictive behaviorRewarding and reinforcing behaviours
- Addictive personalitySet of personality traits
- Addington v. Texas1979 United States Supreme Court case
- Adelbert Ames Jr.American scientist (1880–1955)
- Adelbert JenkinsAmerican clinical psychologist
- Adele Eskeles GottfriedPsychologist and educator
- Adele PostonAmerican psychiatric nurse
- Adelheid KochGerman-Brazilian psychoanalyst
- ADHD Rating ScaleSelf-reported ADHD assessment
- Adjective Check ListPsychological assessment using 300 adjectives for common traits
- Adjustment (psychology)Adapting to conditions in social environment
- Adma d'HeurleAmerican psychologist (1924–2019)
- AdmirationSocial emotion
- AdnanitesTribal confederation of the Ishmaelite Arabs
- ADNP syndromeGenetic disorder characterized by developmental delay and autistic features
- Adolescent cliqueCliques that develop among adolescents
- Adolescent crystallizationAdolescent crystallization, as defined by Laurence Steinberg, is a stage during adolescenc
- Adolescent egocentrismDevelopmental psychology term
- Adolescent medicineAdolescent medicine, also known as adolescent and young adult medicine, is a medical subsp
- Adolph SternAmerican psychiatrist and psychoanalyst
- Adoption studyType of research study used in behavioral genetics
- Adrian David CheokAdrian David Cheok AM is an Australian electrical engineer and academic. He is a professor
- Adrian FurnhamSouth African–born British psychologist
- Adrian RaineBritish psychologist
- Adrian WellsBritish clinical psychologist
- Adrienne C. LahtiAmerican behavioural neurobiologist
- Adult ADHD Self-Report ScaleSelf-reported questionnaire used to assist in the diagnosis of ADHD in adults
- Adult attachment disorderProposed mental disorder
- Adult developmentHuman development following adolescence
- AdventureExciting or unusual experience
- Adventure therapyType of psychotherapy
- Adverse childhood experiencesTraumatic events that occur during childhood
- Adverse childhood experiences among Hispanic and Latino AmericansAdverse childhood experiences (ACEs) are identified as serious and traumatizing experience
- Advinia HealthCareBritish health care provider
- Advocates for Children in TherapyU.S. advocacy group
- Aesthetic emotionsEmotions felt during aesthetic activities
- Aesthetic illusionType of mental absorption
- Affect (psychology)Experience of feeling or emotion
- Affect as information hypothesisCognitive psychology concept
- Affect consciousnessPsychological concept
- Affect displayVerbal and non-verbal displays of emotion
- Affect heuristicMental shortcut based on emotion
- Affect in educationIn education, affect is broadly defined as the attitudes, emotions, and values present in
- Affect labelingImplicit emotional regulation strategy
- Affect measuresMethods of studying emotion and mood
- Affect primingAffective priming, also called affect priming, is a type of response priming and was first
- Affect regulationConcept in psychology
- Affect theoryTheory that seeks to organize subjective feelings into discrete categories
- Affectional bondAttachment behavior one person has for another
- Affective designDesign focused on emotional responses
- Affective forecastingPredicting someone's future emotions (affect)
- Affective meditationChristian spiritual practice
- Affective scienceStudy of emotion or feeling of emotion
- Affiliative conflict theoryAffiliative conflict theory (ACT) is a social psychological approach that encompasses inte
- Affinity biasCognitive bias favoring people perceived as similar
- Affirmations (New Age)Practice of positive thinking and self-empowerment
- Affordable Care Act tax provisionsIn 2014, the Internal Revenue Service (IRS) introduced a host of tax provisions to accommo
- AffranchiPejorative term used to refer to mulattoes
- AfghanistanismFocusing on faraway issues over local
- AfterwardsnessConcept of Freudian psychoanalysis
- Against Empathy2016 book by Paul Bloom
- Against Therapy1988 book by Jeffrey Moussaieff Masson
- Age regression in hypnotherapyControversial therapy technique
- Agency (psychology)Ability to initiate and control actions
- Agent detectionCognitive bias
- AggressionSocial interaction aiming at inflicting harm or unpleasantness
- Aggression replacement trainingCognitive behavioural intervention
- AggressionismPhilosophical theory
- Agnes Melinda KovacsPsychologist, linguist and cognitive scientist
- Ágnes SzokolszkyHungarian psychologist (born 1956)
- AH v West London Mental Health TrustLandmark court case in England
- AI-induced psychosisAI-induced psychosis, also called AI psychosis or chatbot psychosis, is a phenomenon in wh
- AilurophobiaFear of cats
- Air rageDisruptive or violent behavior on an aircraft
- Air-defense experimentsThe Air-defense experiments were a series of management science experiments performed betw
- Aix-en-Provence possessionsThe Aix-en-Provence possessions were a series of alleged cases of demonic possession occur
- Akihabara massacre2008 civilian attack in Tokyo
- AkrasiaLack of self-control
- Al-Anon/AlateenSupport group
- Alan BaddeleyBritish psychologist (born 1934)
- Alan BermanAmerican psychologist (born 1943)
- Alan Kennedy (psychologist)British psychologist
- Alan LipmanAmerican psychologist
- Alan M. LeslieScottish psychologist
- Alan S. KaufmanAmerican psychologist, writer, and research professor (born 1944)
- Alaska Mental Health Enabling ActPublic Law Act aimed to improve Mental health care
- Alathena Johnson SmithAmerican child psychologist
- Albedo (alchemy)In alchemy, albedo, or leucosis, is the second of the four major stages of the Magnum Opus
- Albert E. WiggamAmerican psychologist and eugenicist
- Albert LefevreAmerican psychologist (1873–1928)
- Albert MehrabianAmerican psychologist (born 1939)
- Albert MichotteBelgian psychologist (1881–1965)
- Albert Paul WeissGerman American behavioral psychologist
- Albert PoffenbergerAmerican psychologist (1885–1977)
- Alcohol myopiaTheory about alcohol's effect on behavior
- Alcohol Use Disorders Identification TestQuestionnaire to screen patients for hazardous and harmful alcohol consumption
- Alcoholic hallucinosisComplication of alcohol misuse in people with alcohol use disorder
- Alcoholism in family systemsSocial and psychological factors that cause alcoholism in families
- AleatoricismAleatoricism (or aleatorism) is a term for musical compositions and other forms of art res
- Alec CoppenBritish psychiatrist (1923–2019)
- Alejandra ForlánUruguayan orator, psychologist and activist
- Alejandra González SocaUruguayan artist, psychologist, and teacher (born 1973)
- Aleks KrotoskiAmerican broadcaster, journalist and social psychologist
- Aleksei LeontievSoviet developmental psychologist
- Aletha C. HustonAmerican psychologist
- Aletha SolterAmerican psychologist
- Alette BeaujonCuraçaoan/Aruban psychologist and poet
- Alette Coble-TempleProfessor of clinical psychology
- Alex BavelasPsychosociologist (b. 1920)
- Alexander Cannon (psychiatrist)James Alexander Cannon (4 August 1896 – 18 March 1963) was a British psychiatrist, occulti
- Alexander HaslamBritish social psychologist (born 1962)
- Alexander LowenAmerican physician and psychotherapist
- Alexander LuriaRussian neuropsychologist (1902–1977)
- Alexander Mitscherlich (psychologist)German psychiatrist and psychoanalyst
- Alexander von EyeGerman-American psychologist (born 1949)
- Alexis BrookBritish psychiatrist and psychotherapist
- AlexithymiaDeficiency in understanding, processing, or describing emotions
- Alfie KohnAlfie Kohn (born October 15, 1957) is an American author and lecturer in the areas of educ
- Alfonso Bernal del RiesgoCuban psychologist (1902–1975)
- Alfred BinetFrench psychologist, IQ test developer (1857–1911)
- Alfred BloomAmerican psychologist and linguist
- Alfred TomatisOtolaryngologist and inventor
- Alfredo LagmayFilipino psychologist (1919–2005)
- AlgolagniaCore tendency of sadomasochism
- Alia CrumAmerican psychologist
- Alice BalintHungarian psychoanalyst
- Alice CherkiAlgerian psychoanalyst
- Alice EaglyProfessor of psychology and of management
- Alice F. HealyAmerican psychologist and academic
- Alice in Wonderland syndromeNeurological disorder that distorts perception of objects' size and distance
- Alice K. LadasAmerican psychologist and psychotherapist (1921–2023)
- Alice M. IsenAmerican psychologist
- Alice MedaliaAmerican neuropsychologist
- Alice Miller (psychologist)Swiss psychologist (1923–2010)
- Alice Rühle-GerstelGerman-Jewish writer, psychologist
- Alice S. CarterAmerican clinical psychologist
- Alice S. KandellAmerican child psychologist, author, photographer
- Alice SluckinBritish social worker and psychologist (1919–2019)
- Alice SpigelmanAustralian clinical psychologist, writer and human rights advocate
- Alicia Beatriz CasulloArgentine psychoanalyst (1940–2019)
- Alison DarcyResearch psychologist and technologist
- Alison ElliotModerator of the General Assembly of the Church of Scotland
- Alison GopnikAmerican psychologist (born 1955)
- Alix StracheyAmerican-British psychoanalyst (1892–1973)
- Allan M. CollinsAmerican cognitive scientist (1936–2026)
- Allan PaivioCanadian psychologist and writer (1925–2016)
- Allan R. WagnerAllan R. Wagner (6 January 1934 – 28 September 2018) was an American experimental psycholo
- Alleged Lunatics' Friend SocietyAdvocacy group campaigning for better treatment of asylum patients
- Allegiance biasBias in behavioral sciences
- Allelomimetic behaviorAllelomimetic behavior, or allomimetic behavior, is a range of activities in which the per
- Allen FrancesAllen J. Frances (born 2 October 1942) is an American psychiatrist. He is currently Profes
- Allen NewellAmerican cognitive scientist
- Allen ParducciAmerican psychologist (1925–2023)
- Allen WheelisAmerican psychoanalyst (1915–2007)
- Alliance for Therapeutic Choice and Scientific IntegrityU.S. nonprofit organization promoting conversion therapy
- Allison GilbertAmerican author and journalist
- AllocentrismPersonality attribute centering attention on others
- Alloplastic adaptationAlloplastic adaptation (from the Greek word "allos", meaning "other") is a form of adaptat
- Allport's ScaleMeasure of social prejudice
- Allyssa McCabeDevelopmental psychologist
- Alok KanojiaAmerican psychiatrist (born 1982)
- Alondra CarrilloChilean constituent
- AlsanaEating disorder treatment center
- Alter egoAlternative self distinct from the actual identity
- AltercastingAltercasting is a theory created by Eugene Weinstein and Paul Deutschberger in 1963. The t
- Altered States of Consciousness Rating ScalesThe Altered States of Consciousness Rating Scales (ASC) are psychometric scales used in re
- AlterityPhilosophical concept of "otherness"
- Alternative five model of personalityThe alternative five factor model of personality is based on the claim that the structure
- Alternative therapies for developmental and learning disabilitiesDiscredited or unproven treatments for developmental and learning disabilities
- AltruismConcern for the well-being of others
- Alva NoëAmerican philosopher (born 1964)
- Alyce CleeseAmerican psychotherapist
- Alyce M. DickinsonAmerican organizational psychologist
- AmafufunyanaCulture-bound syndrome
- Amanda WoodwardAmerican psychologist
- Ambient optic arrayStructured arrangement of light with respect to a point of observation
- Ambiguity tolerance–intoleranceProposed aspect of personality
- Ambiguous lossLoss without closure or clear understanding
- AmbitionCharacter trait associated with pursuit of lofty goals
- AmbivalenceSimultaneous conflicting beliefs or feelings
- Ambivalent prejudiceSocial psychology theory
- Ambroise-Auguste LiébeaultFrench physician and founding member of the Nancy School of Hypnosis
- Amélie MummendeyGerman social psychologist (1944–2018)
- American Academy in BerlinThe American Academy in Berlin is a private, independent, nonpartisan research and cultura
- American Academy of Child and Adolescent PsychiatryNon-profit psychiatry for children and adolescents
- American Academy of Psychoanalysis and Dynamic PsychiatryThe American Academy of Psychodynamic Psychiatry and Psychoanalysis (AAPDPP) is a scholarl
- American Art Therapy AssociationThe American Art Therapy Association (AATA) is a U.S. not-for-profit 501(c)(3), non-partis
- American Association for Emergency PsychiatryThe American Association for Emergency Psychiatry (AAEP) is a professional association for
- American Association for Geriatric PsychiatryThe American Association for Geriatric Psychiatry (AAGP), not-for-profit, 501(c)(3) organi
- American Association for Laboratory Animal ScienceThe American Association for Laboratory Animal Science (AALAS) is a 501(c)(3) nonprofit me
- American Association for Marriage and Family TherapyAmerican trade association
- American Association of Christian CounselorsThe American Association of Christian Counselors, Inc. (AACC) is the largest organization
- American Association of Pastoral CounselorsThe American Association of Pastoral Counselors was a professional organization of pastora
- American Association of SuicidologyAmerican nonprofit organization
- American Board of Professional PsychologyIndependent American specialty certification board
- American cover-up of Japanese war crimesThe occupying United States government undertook the selective cover-up of some Japanese w
- American Foundation for Suicide PreventionNon-profit organization in the USA
- American Psychiatric AssociationProfessional organization of US psychiatrists
- American Psychoanalytic AssociationThe American Psychoanalytic Association (APsA) is an association of psychoanalysts in the
- American Psychological AssociationScientific and professional organization
- American Psychological FoundationPsychology-oriented philanthropic organization
- American Psychology–Law SocietyProfessional association for psychologists and legal scholars
- American Psychopathological AssociationThe American Psychopathological Association (APPA) is an organization "devoted to the scie
- American Service PetsAmerican mental health services platform
- American Synesthesia AssociationNot-for-profit academic society
- American Zen Teachers AssociationThe American Zen Teachers Association (AZTA) was founded in the late 1980s as the Second G
- Ami KlinAmi Klin is an American psychologist who studies autism. He is the first chief of autism a
- Aminta H. BreauxAmerican psychologist and academic administrator (born 1959)
- Ammons Quick TestIntelligence test
- AmnesiaCognitive disorder where memory is disturbed or lost
- Amnon RapoportIsraeli psychologist
- Amok syndromeAggressive behavioral pattern
- Amotivational syndromeImpairments primarily associated with cannabis use
- AmusementPositive emotion related to humor
- Amy CuddyAmerican psychologist (born 1972)
- Amy OrbenBritish experimental psychologist
- Amy SingerAmerican psychologist
- Amy TannerAmerican psychologist 1870-1956
- An Outline of PsychoanalysisPosthumous book by Sigmund Freud
- An Unquiet Mind1995 memoir by Kay Redfield Jamison
- Ana Abraido-LanzaAmerican behavioural psychologist
- Ana Cristina SilvaPortuguese psychologist and novelist
- Ana Fagianni de MaldonadoAna Violeta Fagianni Enriquez de Maldonado (born c. 1943) is a Guatemalan diplomat and act
- Anal retentivenessFreudian Psychosexual development
- Anal stageSecond stage in Sigmund Freud's theory of psychosexual development
- Analysis of the Personality of Adolph HitlerWorld War II American attempt to psychoanalyse Hitler
- Analytic hierarchy processStructured technique for organizing and analyzing complex decisions
- Analytical psychologyJungian theories
- Analytical skillCrucial skill in all different fields of work and life
- Anarchism and issues related to love and sexAnarchism and free love, free sex
- AncraophobiaFear of storms
- Anders HaldAnders Hjorth Hald (3 July 1913 – 11 November 2007) was a Danish statistician. He was a pr
- André Green (psychoanalyst)French psychoanalyst (1927–2012)
- Andrea diSessaAmerican physicist
- Andrea SmortiItalian developmental psychologist
- Andreas DemetriouGreek Cypriot developmental psychologist (born 1950)
- Andreas MaerckerGerman psychologist (born 1960)
- Andrew E. SkodolAmerican psychiatrist
- Andrew M. McIntoshBritish psychiatrist
- Andrew N. MeltzoffAmerican psychologist
- Andrew Radford (linguist)British linguist (1945–2024)
- Andrew Salter (psychologist)Andrew Salter (May 9, 1914 – October 7, 1996) was an American clinical psychologist who in
- Andrew SteptoeBritish psychologist and epidemiologist
- Andrew TatarskyAmerican psychologist (born 1955)
- Andrey Alexandrovich VerbitskyRussian educational psychologist
- Android scienceInterdisciplinary framework
- Andrzej LederPolish cultural philosopher
- Andrzej SamsonPolish psychologist
- Andy Young (psychologist)British psychologist
- Anecdotal cognitivismResearch method in animal behavior
- Angela FitzgeraldAmerican educator and television presenter
- Angela GrippoAmerican neuroscientist and health psychologist
- Angela Neal-BarnettAmerican child psychologist
- Ángela RobledoColombian psychologist and politician
- Angelika KallwassGerman psychologist and TV host
- Angeline LillardAmerican developmental psychologist
- AngerIntense hostile emotional state of mind
- Anger managementTherapy for anger prevention and control
- Angewandte Psychologie1917 book by Theodor Paul Erismann
- Angry black womanStereotype about Black American women
- Angry Cognitions ScalePsychometric measure of anger
- Angry white maleRacial stereotype used in politics
- AnhedoniaInability to feel pleasure
- Ani KalayjianSyrian Armenian-American psychologist, author
- Anima and animusJungian theory
- Animal as BridegroomTypology of Beauty and the Beast
- Animal Farm FoundationPit bull advocacy group against BSL
- Animal hoardingKeeping more domestic pets than can be cared for
- Animal lossGrief over the loss of an animal
- Animal psychopathologyBranch of scientific study
- Animal testing on frogsFrogs have been used in animal tests throughout the history of biomedical science.
- Animal testing on invertebratesMost animal testing involves invertebrates, especially Drosophila melanogaster, a fruit fl
- Animals in TranslationBook by Temple Grandin and Catherine Johnson
- Aniruddh D. PatelCognitive psychologist
- Anita BarbeeAmerican psychologist and social worker
- Anita H. ClaytonAmerican researcher
- Anita Woolfolk HoyAmerican psychologist
- Anjhula Mya BaisIndian-American psychologist and activist
- Anke EhlersGerman PTSD psychologist
- Anke EhrhardtAmerican-German psychologist
- Ann BrownBritish educational psychologist
- Ann DallyEnglish doctor, psychiatrist and author born 1926
- Ann FaradayBritish psychologist
- Ann Katharine MitchellBritish cryptanalyst and psychologist (1922–2020)
- Ann PhoenixBritish psychologist (born 1955)
- Ann SyrdalAmerican psychologist and researcher (1945–2020)
- Anna BorghiCognitive psychologist
- Anna Costanza BaldryItalian social psychologist (1970–2019)
- Anna Freud CentreChild mental health research, training, policy and treatment centre in London
- Anna GillinghamBritish psychologist and educator
- Anna J. McKeagAmerican psychologist, college president
- Anna Jean AyresAmerican occupational therapist and educational psychologist
- Anna SalterAmerican psychologist
- Anna Stetsenko (psychologist)Soviet psychologist
- Anna TerruweDutch Catholic psychiatrist (1911–2004)
- Anne AnastasiAmerican psychologist
- Anne C. PetersenAmerican psychologist
- Anne DufourmantelleFrench psychoanalyst and philosopher (1964–2017)
- Anne E. RussonCanadian psychologist
- Anne FernaldAmerican psychologist
- Anne HallwardAmerican psychiatrist and public radio show host
- Anne Marie AlbanoClinical psychologist
- Anne RoeAmerican psychologist
- Anne TreismanEnglish cognitive psychologist (1935–2018)
- Anne-Marie SandlerSwiss-born British psychologist (1925–2018)
- Annette Karmiloff-SmithDevelopmental psychologist (1938–2016)
- Annie CurtisIrish immunologist
- Annie ReichAustrian-American psychoanalyst (1902–1971)
- Annual Review of Clinical PsychologyAcademic journal
- Annual Review of Developmental PsychologyAcademic journal
- Annual Review of Organizational Psychology and Organizational BehaviorAcademic journal
- Annual Review of Vision ScienceThe Annual Review of Vision Science is an academic journal published by Annual Reviews. In
- Anny Rosenberg KatanAustrian-American physician & psychoanalyst
- Anomalistic psychologyBranch of psychology
- Anouchka GroseBritish-Australian psychoanalyst, writer, and musician (born 1970)
- Antecedent (behavioral psychology)Stimulus that cues an organism to perform a learned behavior
- Anterograde amnesiaLoss of short-term memory
- Anthony D'AugelliAnthony Raymond D'Augelli is Associate Dean for Undergraduate Programs and Outreach, as we
- Anthony GreenwaldAmerican psychologist
- Anthony J. MarsellaAmerican psychiatrist
- Anthony PratkanisAmerican psychologist (born 1957)
- Anthony RyleEnglish medical doctor
- Anthony Stevens (Jungian analyst)British psychiatrist (1933–2023)
- Anthony StorrEnglish psychiatrist, psychoanalyst, and author (1920–2001)
- Anthony YeoSingaporean counsellor
- Anthropology from a Pragmatic Point of ViewBook by Prussian philosopher Immanuel Kant
- Anti-African sentimentFear or hatred of African people
- AnticipationEmotion involving pleasure or anxiety in considering or awaiting an expected event
- Anticipatory anxietyFear in response to anticipated events
- Anticonformity (psychology)Behaviour challenging group norms
- Antidepressants in JapanThe number of new psychiatric drugs, and especially antidepressants on the market in Japan
- AntinarcissismForm of narcissistic character
- Antonette M. ZeissAmerican clinical psychologist
- Antoni KępińskiAntoni Ignacy Tadeusz Kępiński (16 November 1918 – 8 June 1972) was a Polish psychiatrist
- Antonín HeverochCzech psychiatrist and neurologist
- Antonio PuenteAmerican neuropsychologist and academic (born 1952)
- Anu RealoEstonian psychologist
- AnxietyUnpleasant emotion
- Anxiety and Depression Association of AmericaAmerican NGO
- Anxiety buffer disruption theoryApplication of terror management theory
- Anxiety dreamDream that causes distress or unease
- Anxiety sensitivityAnxiety sensitivity (AS) refers to the fear of behaviours or sensations associated with th
- Anxiety thresholdLevel of anxiety that will affect a person's performance
- Anxiety/uncertainty managementTheory of effective communication
- AP PsychologyAdvanced Placement course and exam
- APA Award for Distinguished Scientific Contributions to PsychologyThe APA Award for Distinguished Scientific Contributions to Psychology is an award of the
- APA Distinguished Scientific Award for the Applications of PsychologyThe APA Distinguished Scientific Award for the Applications of Psychology is an award of t
- APA styleAcademic style and writing format
- APA Task Force on Deceptive and Indirect Methods of Persuasion and ControlThe APA Task Force on Deceptive and Indirect Methods (or Techniques) of Persuasion and Con
- ApathyState of indifference, or the suppression of emotions
- ApeirophobiaFear of infinity
- Aphrodite ProjectMatchmaking event
- Apollo archetypeType of innate universal psychic disposition
- Appalachian stereotypesInaccurate impressions about Appalachian people and culture
- Apparitional experienceAnomalous experience in parapsychology
- Applied behavior analysisApplication of respondent and operant conditioning to change behavior
- Appraisal theoryPsychological theory
- Approach-avoidance conflictType of stress causing conflict
- Approaches to prejudice reductionPrejudice is a preconceived, typically unfavorable opinion towards someone based on their
- Approximate number systemInnate ability to detect differences in magnitude without counting
- AptitudeAbility; competence to do a certain kind of work at a certain level
- AquaphobiaPersistent and abnormal fear of water
- Arbitrary inferenceAspect of cognitive therapy
- Archaic motherConcept in psychoanalysis
- Archetypal literary criticismLiterary Criticism theory
- Archetypal pedagogyTheory of Education by Clifford Mayes
- Architectural psychology in GermanyArchitectural and environmental psychology developed within the German-speaking world in t
- Archuleta v. HedrickArchuleta v. Hedrick, 365 F.3d 644 (8th Cir. 2004) was a pro se petition for a writ of hab
- Arellano v. McDonough2023 United States Supreme Court case
- Argument mapVisual representation of the structure of an argument
- Arie W. KruglanskiAmerican psychologist (born 1939)
- Aristotelian SocietyThe Aristotelian Society for the Systematic Study of Philosophy, more generally known as t
- ArithmomaniaMental disorder characterized by compulsive counting
- Armed Services Vocational Aptitude BatteryEducational assessment administered by the U.S. military
- Armindo Freitas-MagalhãesPortuguese psychologist (born 1966)
- ArmstrongismReligious teachings and doctrines of Herbert W. Armstrong
- Army General Classification TestAmerican recruit intelligence assessment
- Army Substance Abuse ProgramThe Army Substance Abuse Program is an anti-substance abuse program in the United States A
- Arne ÖhmanSwedish psychologist and professor (1943–2020)
- Arnold GesellAmerican psychologist and pediatrician (1880–1961)
- Arnold GoldbergArnold Goldberg (May 21, 1929 – September 24, 2020) was an American psychiatrist and psych
- Arnold H. BussAmerican psychologist (1924–2021)
- Arnold HutschneckerAustrian-American psychiatrist
- Arnold Mitchell (social scientist)American social scientist (1918–1985)
- Arnulf KolstadNorwegian social psychologist (1942–2020)
- Aroma lampAroma lamps, or diffusers, are used to diffuse essential oils. They may project the oil in
- AromatherapyPseudoscientific alternative medicine practice
- Aron ZalkindSoviet psychologist (1888–1936)
- Art and emotionIn psychology of art, the relationship between art and emotion has newly been the subject
- Art of memoryLearning technique that aids information retention
- Art therapyCreation of art to improve mental health
- Artful LearningArtful Learning is an educational philosophy model that is concept-based and interdiscipli
- Arthur A. LumsdaineAmerican psychologist
- Arthur C. GraesserArthur C. Graesser (born 1950) is a professor of psychology and intelligent systems at the
- Arthur F. KramerAmerican cognitive scientist
- Arthur J. BachrachAmerican psychologist and administrator (1923–2011)
- Arthur J. DeikmanAmerican psychiatrist (1929–2013)
- Arthur JanovAmerican psychologist, psychotherapist and writer
- Arthur JensenAmerican psychologist and writer (1923–2012)
- Arthur KleinmanAmerican psychiatrist
- Arthur KronfeldGerman psychiatrist (1886–1941)
- Arthur M. GlenbergAmerican cognitive psychologist
- Arthur P. ShimamuraAmerican psychologist (1954–2020)
- Arthur RamosBrazilian psychiatrist
- Arthur S. ReberAmerican psychologist (1940–2025)
- Articulatory suppressionArticulatory suppression is the process of inhibiting memory performance by speaking while
- Artificial grammar learningArtificial grammar learning (AGL) is a paradigm of study within cognitive psychology and l
- Artificial psychologyDiscipline proposed by Dan Curtis
- Artistic inspirationUnconscious burst of creativity
- ASA Silver MedalThe ASA Silver Medal is an award presented by the Acoustical Society of America to individ
- Ascending and DescendingAscending and Descending is a lithograph print by the Dutch artist M. C. Escher first prin
- Asch conformity experimentsSeries of psychology studies
- Åse Gruda SkardNorwegian psychologist
- Ásgeir HelgasonIcelandic scientist (born 1957)
- Ashkenazi Jewish intelligenceStereotype of Jews
- Asian fetishSexual obsession with Asian people expressed by non-Asians
- Asian psychologyAsian psychology is a branch of cultural psychology that studies psychological concepts as
- Aspergirls2010 non-fiction book by Rudy Simone
- Aspies For FreedomAutism rights group
- Assembly bonus effectFirst proposed in 1964, an assembly bonus effect requires a demonstration of group perform
- Assertive community treatmentSystem for treating mental illness
- AssertivenessCapacity of being self-assured without being aggressive to defend a point of view
- Assessment dayAn assessment day is usually used in the context of recruitment. On this day, a group of a
- Assessment of basic language and learning skillsChild development assessment tool
- Associated features of bipolar disorderClinical phenomena that often accompany bipolar disorder
- Association for Behavior Analysis InternationalTrade group focusing on behavior analysis
- Association for Behavioral and Cognitive TherapiesPsychological association in New York City
- Association for Humanistic PsychologyThe Association for Humanistic Psychology is a professional organization in the field of h
- Association for Psychological ScienceAcademic research society
- Association for Psychosocial StudiesUK learned society
- Association for Research in PersonalityThe Association for Research in Personality (abbreviated ARP) is an American learned socie
- Association for the Advancement of Philosophy and PsychiatryThe Association for the Advancement of Philosophy and Psychiatry, or AAPP, is an organizat
- Association for the Scientific Study of ConsciousnessThe Association for the Scientific Study of Consciousness (ASSC) is an American non-profit
- Association for the Study of Ethnicity and NationalismThe Association for the Study of Ethnicity and Nationalism (ASEN) is an international, int
- Association for Women in PsychologyThe Association for Women in Psychology (AWP) is a not-for-profit scientific and education
- Association Francophone pour l'Etude et la Recherche sur les HikikomoriMental health association in Italy
- Association of Black PsychologistsAmerican professional organization
- Association of ideasProcess by which representations arise in consciousness
- Association of Latter-day Saint Counselors and PsychotherapistsMental health organization in Utah
- Association of Medical Superintendents of American Institutions for the InsanePredecessor of the American Psychiatric Association
- Association of Mental Health ProvidersBritish registered charity
- Association splittingSelf-help technique for people with OCD
- Association valueMeasure of meaningfulness in cognition
- Associative memory (psychology)Ability to learn associations between unrelated objects
- AstraphobiaFear of thunder and lightning
- Asylum architecture in the United StatesBuilding design of mental hospitals
- Asylums (book)1961 book by Erving Goffman
- AthymhormiaDisorder of motivation, curiosity and affect
- Atlantis (commune)Commune in Ireland
- Attachment disorderBroad psychiatric condition
- Attachment in adultsApplication of the theory of attachment to adults
- Attachment in childrenBiological instinct
- Attachment measuresPsychological technique
- Attachment parentingParenting philosophy
- Attachment theory and psychology of religionResearch area
- Attachment therapyPseudoscientific category of mental health interventions
- Attachment-based psychotherapyPsychoanalytic psychotherapy based on attachment theory
- Attachment-based therapyPsychological interventions
- Attack therapyHighly confrontational type of psychotherapy
- Attendant circumstanceIn law, attendant circumstances (sometimes external circumstances) are the facts surroundi
- AttentionPsychological focus, perception and prioritising discrete information
- Attention seekingTo act in a way that is likely to elicit attention
- Attention spanTime spent concentrating before being distracted
- Attention theftConcept in marketing and psychology
- Attention trackingAttentionTracking is an attention measurement procedure. In contrast to classical machine-
- Attentional biasTendency for people's perception to be affected by their recurring thoughts at the time
- Attentional controlIndividual's capacity to choose what they pay attention to and what they ignore
- Attentional retrainingRetraining of automatic attentional processes
- Attentional shiftCognitive process related to executive functions
- Attenuation theoryTheory of selective attention
- Attitude (psychology)Concept in psychology and communication studies
- Attitude changeTheory of change of associated beliefs and behaviours
- Attitude objectConcept around which an attitude is formed and changes over time
- Attitude-behavior consistencyConcept in social psychology
- Attraction to disabilityType of sexual attraction
- Attraction to transgender peopleAttraction on the basis of sexual desire towards transgender individuals
- Attribute hierarchy methodThe attribute hierarchy method (AHM), is a cognitively based psychometric procedure develo
- Attribute substitutionType of cognitive bias
- Attribution (psychology)Process by which individuals explain causes of behavior and events
- Attribution QuestionnairePsychological measurement
- Attribution-value modelThe attribution-value model is a framework for understanding individual differences in pre
- Attributional ambiguityPsychological attribution concept
- Attributions for povertyAttributions for poverty is a theory concerned with what people believe about the causes o
- Atypical anorexia nervosaEating disorder
- Aubrey McKennellBritish social psychologist (1927-2013)
- Audience segmentationProcess of dividing people into subgroups
- Auditory exclusionTemporary loss of hearing due to stress
- Auditory hallucinationPerception of sound without auditory stimulus
- Auditory illusionFalse perceptions of a real sound or outside stimulus
- Auditory integration trainingDeveloping treatment for auditory disorders
- Auditory learningType of learning style
- August AichhornAustrian educator, psychoanalyst, and social worker
- Augusta Fox BronnerAmerican psychologist (1881–1966)
- Auguste Arthur de la RiveProf Auguste Arthur de la Rive ForMemRS, HFRSE (9 October 1801 – 27 November 1873) was a S
- Auguste MarieFrench psychiatrist
- Augusto CuryBrazilian writer and psychiatrist
- Australian Father of the Year awardThe Australian Father of the Year Award is presented annually to "a distinguished father w
- Australian Psychological SocietyProfessional association for psychologists
- Australian Psychology Accreditation CouncilAccrediting body for Australian psychologists
- AustralophileSomeone with an appreciation or love of Australia
- Authentic learningEducational approach
- Authoritarian leadership styleAn authoritarian (paternalistic, top-down, coercive, autocratic) leadership style is descr
- Authority (sociology)In sociology, authority is the legitimate or socially approved power which one person or a
- Authority biasCognitive bias
- Autism – Tics, AD/HD, and other ComorbiditiesPsychological measure
- Autism and memoryThe relationship between autism and memory, specifically memory functions in relation to a
- Autism CymruFormer Welsh national charity for autism
- Autism in BrazilAutism in Brazil has had a number of manifestations since the 20th century. It was introdu
- Autism in China
- Autism in popular cultureAutism spectrum disorder (ASD) is a neurodevelopmental disorder currently defined in the f
- Autism in psychoanalysisIn psychoanalysis, the concept of autism is closely linked to the term autoeroticism, whic
- Autism Is a WorldDocumentary promoting a discredited communication technique
- Autism Network InternationalAdvocacy organization run by and for autistic people
- Autism PlusAutism charity in England
- Autism Society of AmericaNon-profit organization in the USA
- Autism Treatment Evaluation ChecklistAutism assessment tool
- Autism-Spectrum QuotientPsychological questionnaire
- Autistic maskingSuppression of autistic behaviors
- AutocliticAutoclitics are verbal responses that modify the effect on the listener of the primary ope
- Autogenic trainingRelaxation technique
- Autokinetic effectOptical illusion
- Automated Neuropsychological Assessment MetricsAutomated Neuropsychological Assessment Metrics (ANAM) is a library of computer-based asse
- Automatic and controlled processesAutomatic and controlled processes (ACP) are the two categories of cognitive processing. A
- Automatic item generationField of study in Psychology
- Automatic negative thoughtsUncontrolled negative thoughts about one's self
- Automatic writingClaimed psychic ability
- AutomaticityAbility to do things without occupying the mind with the low-level details required
- Autonoetic consciousnessHuman ability for introspection
- AutophobiaSpecific phobia of isolation
- Autoplastic adaptationAutoplastic adaptation (from the Greek word auto) is a form of adaptation where the subjec
- AutosexualitySexual attraction to oneself
- AutostereogramVisual illusion of 3D scene
- AutosuggestionPsychological technique related to the placebo effect
- AutovampirismMedical condition
- Auxiliary egoPosition taken by participants in a role-playing exercise
- Availability cascadeExplanation for types of collective belief
- Availability heuristicBias towards recently acquired information
- AveragenessPerceived beauty of an 'averaged' face
- Averroes's theory of the unity of the intellectMedieval theory about human intellect
- Aversion therapyForm of psychological treatment
- Aversion to happinessMedical condition
- AversivesUnpleasant stimulus that induces changes in behavior through punishment
- Avoidant/restrictive food intake disorderFeeding or eating disorder
- AvolitionInability to initiate and persist in goal-directed activities
- Avshalom CaspiIsraeli-American psychologist (born 1960)
- Aware (voluntary organisation)Aware is a voluntary organisation based in Ireland which aims to assist people affected by
- AwarenessPerception or knowledge of something
- AweEmotion comparable to wonder
- Axel CleeremansBelgian research director (b. 1962)
- Ayana JordanAmerican addiction psychiatrist
- Ayanna Kim ThomasMemory scientist
- Ayelet Gundar-GoshenIsraeli author, psychologist and screenwriter
- Aysel EkşiTurkish psychiatrist (1934–2015)
- Azande witchcraftWitchcraft in North Central Africa