Magnitude
Characteristic of a scale of measurement where the individual units possess the qualities of greater than, equal to, or less than.
Main
Effect
The effect of one variable on another without any other variables or subgroups involvement.
Manifest
Content
According
to Freud, the storylike superficial content of a
dream, often representing only the daily activities
and little underlying unconscious material.
Maslow,
Abraham
Humanistic
Theorist most famous for the development of the
Hierarchy of Needs.
Maturation
Changes
due to the natural process of aging as determined
by your genetics
Mean
A
measure of central tendency determined by adding all scores together and dividing by the number of scores. Often referred to as the statistical average.
Measure
of Central Tendency
An
average (see Mean, Median, and/or Mode)
Measurement,
Scales of
Categories of data based on their numerical characteristics (See Ratio, Interval, Ordinal, and Nominal Scales)
Median
A
measure of central tendency that uses the middle most
occurring score in a distribution (the score that occurs at
exactly the 50th percentile).
Medulla
Oblongata
Part
of the brainstem that controls vital
lifesustaining functions such as heartbeat,
breathing, blood pressure, and digestion.
Memory
Effect
Error in research that results from subjects recalling previous testing and applying that knowledge to current testing.
Mesokurtic
A
curve or distribution that has a balanced amount of variance so that is resembles a normal curve.
Meta
Analysis
The statistical procedure used to combine numerous and independent research results into one study. Each research study becomes one subject in the metaanalysis.
Minnesota
Multiphasic Personality Inventory, 2nd. Edition
An Objective
test utilizing 567 items which have been
empirically derived to measure a variety of
psychological concerns.
MMPI2
See
Minnesota Multiphasic Personality Inventory, 2nd.
Edition.
Mode
A
measure of central tendency that uses the most frequently
occurring score. A distribution with two or more scores that are equal and occur most frequently is called multimodal.
Modeling
Learning
through the imitation or observation of others.
Mortality
Subject dropout in a research study.
Mortality becomes a problem when a disproportionate drop out rate occurs between two or more groups (Example: 30% of males drop out of group one while only 2% of males drop out in group two, resulting in uneven groups).
Motivation
The process that energizes and/or maintains
a behavior.
Motive
Internal
states that provide direction for one's
behaviors.
Multiple
Correlation
A correlational technique used when there is one X and two or more Y. (Example:
the correlation between age and (math and English
ability).
