Which of the following is least likely to be used in behavioural assessment?

A researcher is studying the amount of sleep college students get each night. She notices that there is a lot of variability in the data,

with some students typically sleeping for around eight hours a night and some sleeping around five hours a night. One way to measure how spread out the data scores are is to use ________ a. the arithmetic mean. b. meta-analysis. c. inferential statistics. d. the standard deviation.

According to Carl Rogers, the problem facing all humans is that we too often receive unconditional positive regard, so we never learn to take responsibility for our actions

a. true b. false