G2 Glossary
Behavioral genetics The fi eld that
investigates the degree to which the
variability of characteristics in a
population arises from genetic versus
environmental factors.
Behaviorism The approach to psychology
that focuses on understanding directly
observable behaviors in order to
understand mental illness and other
psychological phenomena.
Benzodiazepines A class of medications
commonly known as tranquilizers.
Bias A tendency that distorts data.
Bibliotherapy The use of self-help materials
as part of therapy.
Binge eating Eating much more food at
one time than most people would eat in
the same context.
Binge-eating disorder A provisional
diagnosis of the variant of an eating
disorder characterized by frequent episodes
of rapid uncontrolled eating of large
quantities of food, even when not hungry,
without subsequent purging; according to
DSM-IV-TR, patients with binge-eating
disorder receive a diagnosis of EDNOS.
Biofeedback A technique by which a
person is trained to bring normally
involuntary or unconscious bodily activity,
such as heart rate or muscle tension, under
voluntary control.
Biological marker A neurological,
bodily, or behavioral characteristic that
distinguishes people with a psychological
disorder (or a fi rst-degree relative with the
disorder) from those without the disorder.
Biomedical treatments Treatments that are
designed to reduce target symptoms and/or
improve quality of life by changing brain
functioning, hormonal activity, or another
aspect of bodily functioning.
Biopsychosocial approach The view that
a psychological disorder arises from the
combined infl uences of three types of
factors—biological, psychological, and
social.
Bipolar disorders Mood disorders in which
a person’s mood is often persistently and
abnormally upbeat or shifts inappropriately
from upbeat to markedly down.
Body dysmorphic disorder A somatoform
disorder characterized by excessive
preoccupation with a perceived defect or
defects in appearance.
Borderline personality disorder A
personality disorder characterized by
volatile emotions, an unstable self-image,
and impulsive behavior in relationships.
Brain circuits Sets of connected neurons that
work together to accomplish a basic process.
Brain systems Sets of brain circuits that work
together to accomplish a complex function.
Brief psychotic disorder The psychotic
disorder characterized by the sudden onset
of positive or disorganized symptoms that
last between a day and a month and are
followed by a full recovery.
Broca’s aphasia A neurological condition
characterized by problems producing speech.
Bulimia nervosa An eating disorder
characterized by binge eating along with
vomiting or other behaviors to compensate
for the large number of calories ingested.
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Case studies (in studies of psychopathology)
A research method that focuses in detail on
one individual and the factors that underlie
that person’s psychological disorder or
disorders.
Catatonia A condition in which an individual
remains in an odd posture or position, with
rigid muscles, for hours.
Catatonic schizophrenia The subtype of
schizophrenia characterized by stiff or
“frozen” postures or poses, bizarre jerky
movements, or frozen facial expression.
Cerebral cortex The outer layer of cells on
the surface of the brain.
Childhood disintegrative disorder A
pervasive developmental disorder
characterized by normal development
until at least 2 years old, followed by a
profound loss of communication skills,
normal types of play, and bowel control.
Civil commitment The involuntary
commitment to a mental health facility of
a person deemed to be at signifi cant risk
of harming himself or herself or a specifi c
other person.
Classical conditioning A type of learning
that occurs when two stimuli are paired so
that a neutral stimulus becomes associated
with another stimulus that elicits a
refl exive behavior; also referred to as
Pavlovian conditioning.
Client-centered therapy A humanistic therapy
developed by Carl Rogers that is intended to
promote personal growth so that a client can
reach his or her full potential.
Clinical assessment The process of
obtaining relevant information and making
a judgment about mental illness based on
the information.
Clinical interview A meeting between
clinician and patient during which the
clinician asks questions related to the
patient’s symptoms and functioning.
Clinical psychologist A mental health
professional who has a doctoral degree
that requires several years of related
coursework and several years of treating
patients while receiving supervision from
experienced clinicians.
Cluster A personality disorders Personality
disorders characterized by odd or eccentric
behaviors that have elements related to
those of schizophrenia.
Cluster B personality disorders Personality
disorders characterized by emotional,
dramatic, or erratic behaviors that involve
problems with emotional regulation.
Cluster C personality disorders Personality
disorders characterized by anxious or
fearful behaviors.
Cognitive disorders A category of psychological
disorders in which the primary symptom is
signifi cantly reduced mental abilities, relative
to a prior level of functioning.
Cognitive distortions Dysfunctional,
maladaptive thoughts that are not accurate
refl ections of reality and contribute to
psychological disorders.
Cognitive rehabilitation A form of
psychological treatment that is designed
to strengthen cognitive abilities through
extensive and focused practice; also called
neurocognitive remediation orcognitive
mediation.
Cognitive restructuring The process of
reorganizing how a person interprets
situations and events, which relies on
replacing dysfunctional or irrational
automatic thoughts with more rational ones.
Cognitive therapy The form of treatment that
rests on the ideas that (1) mental contents
infl uence feelings and behavior; (2) irrational
thoughts and incorrect beliefs lead to
psychological problems; and, (3) correcting
such thoughts and beliefs will therefore lead
to better mood and more adaptive behavior.
Cognitive-behavior therapy The form of
treatment that combines methods from
cognitive and behavior therapies.
Common factors Helpful aspects of therapy
that are shared by virtually all types of
psychotherapy.
Common liabilities model The model that
explains how neurological, psychological,