Examlex
Females have an XY combination of chromosomes in the 23rd pair, whereas males have an XX combination.
Moderator Variables
Variables that explain when, where, or for whom an effect is most likely to occur.
Random Assignment
A method in experimental design where participants are allocated to different groups on a random basis to reduce bias and increase the validity of the results.
Construct Validity
The extent to which a test or instrument measures the theoretical construct it's intended to measure.
Experimenter Bias
The possibility that the experimenter’s knowledge of the condition a particular participant is in could affect her behavior toward the participant and thereby introduce a confounding variable to the independent variable manipulation.
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