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MAIN EFFECT

is the consistent effect of a single factor over other factors in the same experiment.

MALADJUSTMENT

Is the common term used to describe an inability to maintain a stable relationship or adjust to changing environments.

MALICE AFORETHOUGHT

Can describe the process of calculation and premeditation before a crime, required before a conviction of first-degree murder in the

MANAGED CARE

is a system of providing healthcare to an individual whilst taking into account the expenses of the delivery of that

MANIFEST VARIABLE

is a variable which is directly observed and the data associated with the variable recorded.

MANUAL METHOD, MANUALIZED THERAPY

is a method used during experiments which maintains rigid conditions and settings in the study to ensure consistency across the

MARGINAL FREQUENCY

can be quantified by totalling either a row or column in a data matrix.

MARKET RESEARCH

Is research undertaken by focus groups or market intelligence corporations to obtain vital information about how the public perceived and

MASKING

is the deliberate and purposeful hiding, muting, silencing or removal of a stimulus from the target so they may no

MASS PSYCHOLOGY

Is the collective term used to describe the range of psychological and emotional processes which occur throughout a population of

MASTURBATION EQUIVALENTS

are processes and activities which have been reported to replace masturbation as an psychological substitute by stimulating the same parts

MATERNAL DEPRIVATION

is the lack of appropriate levels of nurturing for the young or child due to the lack of a maternal

MATRIX

is an array of numerical data which is arranged in a rectangular fashion indexed by a row and column indicator.

MAY, ROLLO

was a U.S. psychologist, psychoanalyst and existentialist who earned his Ph.D. from Columbia University in 1949 in clinical psychology. May

MEAN LENGTH OF UTTERANCE (MLU)

is a measure of the development of language in young children which is based primarily on the mean length of

MECHANICAL-APTITUDC TEST

are tests which are designed to examine an individuals abilities which are related to mechanical work such as perceptual skills,

MEDIAL PREFRONTAL CORTEX

is a region of the prefrontal cortex of the brain which plays a major role in the control of an

MEDIATIONAL DEFICIENCY

the lack of a process or strategy in children which leads to decreased task performance.

MEDICATION-INDUCCD MOVEMENT DISORDER

is any disorder involving the limbs which results after having taken a specific medicine, this does not have to be

MEISSNER'S CORPUSCLE

are found in abundance in the fingers as they are the main sensory neuron with nerve endings that are sensitive