本题目来源于试卷: IB Psychology HL Approaches to Research on Behavior，类别为 IB心理学
[单选题]
A research investigatijg v3xe : 5(z i:gagquyg/0: c/sknqnaq.j+.ton analyzes the effects of a new fitness program on wei 6qonv3et(6n dght loss outcomes in a specific age group. The researchers generalised the findings to ont3vde (6 q6nall age groups.
What potential challenge to generalisation is evident in this scenario?
A. Lack of statistical significance in the results
B. Lack of control over extraneous variables
C. Overestimation of the effect size
D. Limited diversity in the sample
参考答案: D
本题详细解析:
When a research study f5wwv6po9 i .xuocuses solely on a specific age group, the findings may not accurately represent other age groups' diverse characteristics and experience. 5up9iovww x6s. This limitation can undermine the study's generalisation of its conclusions to a broader population.
Choice A is linked to the precision of results, B and C are not potential limitations to generalisability of results in this context.
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