Reciprocal Determinism Research Design
In a study of personality development, 200 college students were randomly assigned to one of two groups. The experimental group joined campus clubs and attended social events, while the control group maintained their usual routines. After six months, the experimental group showed significantly greater increases in self-efficacy and self-concept. Which aspect of this research design limits its ability to support the theory of reciprocal determinism?
The study only manipulated environmental factors without measuring behavioral and personal changes throughout the process
The study duration was not long enough to observe personality changes
The sample size was too small to draw meaningful conclusions
Random assignment was not appropriate for this type of study
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