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 investigation ano9g+/k6t ie7m;wjb (e wu*gig alyzes the effehc(b, nd0 ;et*:z3lggtz8x+ n(ztne icts of a new fitness program on weight loss outcomes in a specific age group. The researchers generaltz(: incng b *(t;z 3dge,ltenx0+z8hised the findings to all 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 focuses solely on a specific age grop*i uxidp8o38up, the findings may not accurately represent other age groups' diverse characteristics and experiences. This limitation can undermine the study's generi8*uxp8 3 odpialisation 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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