In what way could a homogeneous population of subjects in a study weaken the study?

Question

Quizplus · Accepted Answer

A homogeneous population in a study refers to a group of subjects who share similar characteristics such as age, gender, or ethnicity. While this may be useful in some cases, it can weaken the study by limiting the generalizability of the findings to a broader population. For example, if a study only includes young, healthy males, the findings may not be applicable to females or older populations. Therefore, a heterogeneous group with a diverse range of characteristics would increase the external validity of the study.

In What Way Could a Homogeneous Population of Subjects in a Study