The genes that cause sex-linked disorders are found on the

A major difference between the ‘tend and befriend' stress response and the responses mediated by the autonomic pathway and the HPA axis is that:

a. the tend and befriend response involves cortisol activity. b. men are more likely to express the tend and be-friend response. c. the tend and befriend response facilitates care for offspring and others in a social group. d. the tend and befriend response is a negative stress reaction, whereas the autonomic pathway and HPa axis responses are positive reactions.

In a(n) _______________ study, a researcher carefully and systematically watches and records behavior, taking care to avoid affecting the subjects being studied

a. observational b. exploratory c. experimental d. double-blind