Difficulties in which type of learning signal the development of problems, such as mental retardation?

One of the main concerns researchers have with using personality tests in selection contexts is:

A) the length of time needed to evaluate candidates' responses. B) that high-quality empirical research to support their use has been slow to develop. C) the expense involved in purchasing personality questionnaires. D) the potential for applicants to fake their responses.

The point at which a person can detect a stimulus 50 percent of the time it is presented is called the __________

a) absolute threshold. b) range threshold. c) difference threshold. d) noticeable threshold.