Final answer:
Low face validity may reduce participants' motivation to engage seriously with a test and can sometimes lead to an increased likelihood of social desirability bias in responses. However, the reliability and validity of a test are not necessarily compromised.
Step-by-step explanation:
Low face validity may reduce participants' motivation to engage seriously with a test. Test-takers may find it challenging to understand the purpose or relevance of a test with low face validity. Low face validity can sometimes lead to an increased likelihood of social desirability bias in responses. However, despite low face validity, the reliability and validity of a test are not necessarily compromised.