One disadvantage of using a survey to gather data for psychological purposes is the fact that it can be __________.

Surveys rely on people’s answers, which may be inaccurate, biased, or affected by how questions are worded. This can make the results unreliable or invalid, so the correct choice is “potentially unreliable or invalid.” Surveys can still be useful research tools and can gather information about observable as well as unobservable topics, so the other choices are not the best answer.

AI-written and checked against the verified answer.