APA Dictionary of Psychology
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O
O
O data
O variable
O-X-O
O’Connor v. Donaldson
O&M
OA
OAEs
Obamacare
obedience
obesity
object
Object Assembly test
object cathexis
object choice
object color
object constancy
object display
object identity
object language
object learning
object libido
object loss
object love
object of consciousness
object of instinct
object permanence
object play
object relations
object relations psychotherapy
object relations theory
object-based attention
object-location memory
object-superiority effect
objectification
objective
objective anxiety
objective competitive situation
objective elaboration
objective indicator
objective prior
objective psychology
objective psychotherapy
objective reality
objective reference
objective responsibility
objective scoring
objective self-awareness
objective set
objective test
objectivism
objectivity
objectivity illusion
obligate carrier
obligation schema
oblique
oblique rotation
OBM
obnubilation
obscenity
obscurantism
observation
observation coding system
observation delusion
observation hold
observational learning
observational study
observed variable
observed-score equating
observer
observer bias
observer drift
observer memory
observing response
obsession
obsessional type
obsessive behavior
obsessive-compulsive disorder (OCD)
obsessive-compulsive personality disorder
obstetrics
obstruction method
obstructive hydrocephalus
obstructive sleep apnea
obstruent
obtrusive idea
obturator
OCB
Occam’s razor
occasion setter
occasion setting
occasional cause
occasionalism
occipital cortex
occipital lobe
occlusion
occult
occupation
occupational ability
occupational adjustment
occupational analysis
occupational biomechanics
occupational counseling
occupational cramp
occupational culture
occupational disease
occupational ergonomics
occupational health psychology
occupational interest measure
occupational neurosis
occupational norm
occupational psychology
occupational rehabilitation
Occupational Safety and Health Administration (OSHA)
occupational segregation
occupational status
occupational stress
occupational test
occupational therapy (OT)
OCD
oceanic feeling
oceanic state
octave
octave effect
ocul-
ocular
ocular accommodation
ocular apraxia
ocular dominance
ocular dominance column
ocular dominance histogram
ocular dysmetria
ocular flutter
ocular hypertelorism
ocular myopathy
ocular palsy
ocular pursuit
oculo- (ocul-)
oculocerebral-hypopigmentation syndrome
oculocerebrorenal syndrome
oculogravic illusion
oculogyral illusion
oculogyric crisis
oculomotor apraxia
oculomotor changes
oculomotor nerve
oculomotor nucleus
oculomotor palsy
oculosympathetic paralysis
oculovestibular response
Od
OD
odd–even reliability
oddity from sample
oddity problem
odds
odds ratio (OR)
odor
odor prism
odorant
odorant-binding protein
odorimetry
odorvector
Odyle
oedipal conflict
oedipal phase
Oedipus complex
OEP
OFA
off cells (OFF cells)
off response (OFF response)
off-center bipolar cell
off-center ganglion cell
off-center/on-surround
off-label
off-task behavior
off-the-job training
off-time life events
officer selection
officer training
officer-assisted suicide
offline group
ogive
Ohm’s law
oikofugic
oikomania
oikotropic
OKR
olan
olanzapine
old-fashioned racism
old-old
Older Adult Resources and Services
oldest old
Oleptro
olfactie
olfaction
olfactometer
olfactometry
olfactophilia
olfactorium
olfactory adaptation
olfactory area
olfactory brain
olfactory bulb
olfactory cell
olfactory cilium
olfactory cortex
olfactory cross-adaptation
olfactory dysfunction
olfactory encoding
olfactory epithelium
olfactory eroticism
olfactory evoked potential (OEP)
olfactory hallucination
olfactory mucosa
olfactory nerve
olfactory receptor
olfactory reference syndrome
olfactory sense organ
olfactory stimulation
olfactory sulcus
olfactory system
olfactory tract
olfactory transduction
olfactory tubercle
oligarchy
oligo- (olig-)
oligodendrocyte
oligodendroglioma
oligohydramnios
oligospermia
olisbos
olivary nucleus
Oliver–McFarlane syndrome
olivocochlear bundle
olivopontocerebellar atrophy
ololiuqui
OLS
OLSAT
ombudsman
omega squared
omega-3 fatty acids (omega 3s)
omen
omission bias
omission training
omitted variable bias
omnibus test
omnipotence
omnipotent therapist
on cells (ON cells)
on response (ON response)
on-center bipolar cell
on-center ganglion cell
on-center/off-surround
on-the-job training
on-time life events
on–off cell
onanism
oncology
ondansetron
one-factor analysis of variance
one-group pretest–posttest design
one-parameter model
one-person psychology
one-sample t test
one-sample test
one-shot case study
one-sided message
one-tailed hypothesis
one-tailed test
one-trial learning
one-way analysis of covariance
one-way analysis of variance
one-way design
one-word stage
oneirism
oneiro- (oneir-)
oneirodynia
oneiromancy
oneirophrenia
oniomania
online group
online self-help group
online social network
online therapy
onomatopoeia
onset insomnia
onset of action
ontoanalysis
ontogenetic fallacy
ontogenetic psychology
ontogeny
ontogeny of conscious experience
ontological confrontation
ontology
oocyte
oogenesis
oophorectomy
opaque
open adoption
open call system
open class society
open design
open economy
open group
open head injury
open hospital
open marriage
open question
open shop
open skill
open society
open study
open system
open system theory
open ward
open word
open-class words
open-classroom design
open-classroom method
open-door hospital
open-ended interview
open-field chamber
open-field test
open-label study
open-loop system
open-office design
opening technique
openmindedness
openness to experience
operandum
operant
operant behavior
operant chamber
operant conditioning
operant conditioning chamber
operant conditioning therapy
operant learning
operant level
operant paradigm
operant response
operation
operation span (OSpan)
operational analysis
operational definition
operational research
operational sex ratio
operational thought
operationalism
operationism
operationist view of consciousness
operations research
operative knowledge
operators
ophidiophilia
ophidiophobia
ophthalmia
ophthalmic nerve
ophthalmology
ophthalmometer
ophthalmoplegia
ophthalmoplegia externa
ophthalmoscope
opiate
opinion
opinion leader
opinion survey
opinion testimony
opinionnaire
opioid
opioid abuse
opioid agonist
opioid analgesic
opioid antagonist
opioid blockade
opioid dependence
opioid intoxication
opioid neurotransmitter
opioid receptor
opioid system
opioid use disorder
opioid withdrawal
Opitz G/BBB syndrome
opium
opponent cell
opponent process theory of acquired motivation
opponent process theory of color vision
opportunism
opportunity class
opportunity sampling
opportunity structure
opposites test
oppositional defiant disorder
opsin
opt-
optic aphasia
optic apraxia
optic array
optic ataxia
optic atrophy
optic chiasm
optic disk
optic flow
optic nerve
optic neuritis
optic radiations
optic tectum
optic tract
optical axis
optical defect
optical flow pattern
optical illusion
optical projection
optical scanner
optician
optics
optimal adjustment
optimal apparent motion
optimal arousal theory
optimal design
optimal distinctiveness theory
optimal foraging theory
optimal functioning
optimal level
optimal outbreeding
optimal scaling
optimal stimulation principle
optimism
optimization
optimize
opto- (opt-)
optogram
optokinetic effect
optokinetic reflex (OKR)
optometry
OR
or rule
or-
ora serrata
oral administration
oral behavior
oral character
oral coitus
oral contraceptive
oral eroticism
oral gratification
oral history
oral method
oral personality
oral phase
oral sadism
oral sex
oral sound
oral stage
oral-aggressive personality
oral-biting phase
oral-receptive personality
oral-sadistic phase
oral-sucking phase
oral–genital contact
oral–lingual dyskinesia
oral–motor feeding problem
Oralet
oralism
orality
Orap
Orbison illusion
orbitofrontal cortex
orchidectomy
order
order effect
order of magnitude
ordered scale
orderliness
ordinal
ordinal data
ordinal scale
ordinal variable
ordinality
ordinary creativity
ordinary least squares regression
ordinate
Orestes complex
orexin
orexis
organ inferiority
organ language
organ of Corti
organ speech
organ transplantation
organelle
organic
organic amnesia
organic approach
organic defect
organic disorder
organic hallucinations
organic paralysis
organic retardation
organic selection
organic sensation
organic therapies
organic variable
organicism
organicity
organicity test
organism
organismic
organismic model
organismic personality theory
organismic psychology
organismic valuing process
organismic variable
organization
organizational approach
organizational assessment
organizational attractiveness
organizational behavior management (OBM)
organizational career
organizational citizenship behavior (OCB)
organizational climate
organizational commitment
organizational culture
organizational culture analysis
organizational development (OD)
organizational dynamics
organizational effect
organizational effectiveness
organizational efficiency
organizational hierarchy
organizational hypothesis
organizational identification
organizational justice
organizational politics
organizational psychology
organizational structure
organized offender
organogenesis
organum vasculosum of the lamina terminalis (OVLT)
orgasm
orgasmic dysfunction
orgasmic phase
orgasmic platform
orgasmic reconditioning
orgastic potency
orgone
orgone therapy
orgy
oriental nightmare-death syndrome
orientation
orientation and mobility training (O&M training)
orientation column
orientation illusion
orienting response
origin-of-language theory
original cause
original sin
originality
Orne effect
ornithinemia
oro- (or-)
orofacial apraxia
orofacial dyskinesia
orogenital activity
oropharynx
orphanin FQ
orphenadrine
Ortgeist
orthergasia
ortho- (orth-)
Ortho-Rater
orthodox psychoanalysis
orthodox sleep
orthogenesis
orthogenetic principle
orthogonal
orthogonal coding
orthogonal contrast
orthogonal design
orthogonal rotation
orthographic distinctiveness effect
orthography
orthokinesis
orthomolecular medicine
orthonasal olfaction
orthopedic cane
orthopsychiatry
orthoptics
orthoptoscope
orthorexia nervosa
orthostatic hypotension
orthotics
oscillator circuit
oscillatory interference model
oscillograph
oscillometer
oscillopsia
oscilloscope
OSHA
osmolagnia
osmolarity
osmometer
osmometric thirst
osmoreceptor
osmoregulation
osmosis
osmotic pressure
OSpan
osphresiolagnia
osphresiophilia
osseous labyrinth
ossicles
osteomalacia
osteopathy
osteopetrosis
osteoporosis
ostracism
Ostwald color system
OT
ot-
OTC
Othello syndrome
other-directed
other–total ratio (OTR)
otic
Otis–Lennon School Ability Test (OLSAT)
otitis media
oto- (ot-)
otoacoustic emissions (OAEs)
otoconium
otohemineurasthenia
otolaryngology
otolith
otology
otoneurology
otopalatodigital spectrum disorders
otosclerosis
ototoxic
OTR
ought self
Ouija board
out-of-body experience
outbreeding
outcome
outcome dependence
outcome evaluation
outcome expectancies
outcome interdependence
outcome measures
outcome research
outcome variable
outer ear
outer hair cells
outer nuclear layer
outer plexiform layer
outer psychophysics
outer-directed
outercourse
outgroup
outgroup extremity effect
outgroup homogeneity bias
outing
outlier
outpatient
outpatient commitment
outpatient services
outplacement counseling
output
output interference
outreach
ova
oval window
ovarian follicle
ovariectomy
ovary
over-the-counter (OTC)
overachiever
overactivity
overage
overattribution bias
overbreathing
overclassification
overcompensation
overconfidence
overcontrolled
overcorrection
overcrowding
overdetermination
overdispersion
overdose (OD)
Overeaters Anonymous (OA)
overexpectation
overextension
overgeneralization
overheating
overidentification
overinclusion
overintensity
overjustification effect
overlapping psychological tasks
overlapping waves theory
overlearning
overload
overload principle
overmatching
overmedication
overpayment inequity
overpopulation
overproduction
overprotection
overreaction
overregularization
oversampling
overshadowing
overshoot
overshooting
overstaffing
overt
overt behavior
overt homosexuality
overt integrity test
overt response
overtone
overtraining syndrome
overvalued idea
overweight
oviduct
oviparity
OVLT
ovulation
ovulatory cycle
ovum
oxazepam
oxidation
oxidative stress
oximetry
oxycephaly
oxycodone
oxygen therapy
oxytocic
oxytocin
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