Humanistic theories are ________ about the nature of human personality

According to the article Old Folks at Home, concerning the ability of older people to perform household tasks, the research study described was at least partially:

(a) a survey (b) an experiment (c) longitudinal (d) a case study

A free-running rhythm is a rhythm without any external

A) light. B) light-dark cycles. C) desynchronization. D) zeitgebers. E) jet lag.