The systematic variation of some factor believed to affect behaviour is an essential characteristic of which of the following methods?
A) case study
B) survey method
C) correlational method
D) experimental method

Question

Quizplus · Accepted Answer

The systematic variation of some factor believed to affect behavior is the basis of the experimental method. This method involves manipulating an independent variable and observing its effects on a dependent variable. The other methods listed - case study, survey method, and correlational method - do not involve the systematic manipulation of a factor.

The Systematic Variation of Some Factor Believed to Affect Behaviour