Adolescent sex offenders
    Adopted children
    Adrenal glands
    Adult development
    Adult intellectual development
    Advertising
    Affiliation need
    Age differences
    Aging and intelligence
    Alcoholism treatment
    Algorithmic-heuristic theory
    Alienation (political)
    All-or-none law
    Allport-Vernon-Lindzey scale
    Alzheimer's disease
    American Board Of Professional Psychology
    American Council on Education
    Analysis of covariance
    Analysis of variance
    Ancient theories of dreams
    Animal communication
    Animal hypnosis
    Animal models
    Animal parental behavior
    Animal sexual behavior
    Animal sociobiology
    Animals raised as humans
    Animals surrogate parents
    Anticipation method
    Anxiety
    Apparent size
    Appetite disorders
    Applied research
    Approaches to learning
    Aptitude testing
    Artistic morphology
    Assertiveness training
    Assessing children for psychotherapy
    Attention
    Attention span
    Attention-deficit hyperactivity disorder, ADHD
    Attitude theory
    Auditory discrimination
    Auditory disorders
    Auditory localization
    Auditory perception
    
   B
    
    Background characteristics
    Backward conditioning
    Barnum effect
    Battered people
    Bayley scales of infant development
    Beck depression inventory
    Behavior therapy
    — problems and issues
    Behavioral contracts
    Behavioral contrast
    Behavioral genetics
    Behavioral inhibition
    Behavioral intervention
    Behavioral medicine
    Behavioral modeling
    Behavioral toxicology
    Behaviorally anchored rating scales
    Behaviorism
    Bender gestalt
    Benton visual retention scale
    Bibliotherapy
    Bilingualism
    Bioenergetics
    Biofeedback
    Biographical inventories
    Biological rhythms
    Birth injuries
    Birth order
    Birth order and personality
    Birth trauma
    Bisexuality