According to James Marcia's four categories of adolescent identity development, adolescents are "stuck" in one category at a time for an extended period of time

. Endorphins are _____

A) found where neurons meet skeletal muscles B) less powerful than enkaphalins C) pain-reducing neurotransmitters D) radically different in function from neurotransmitters

If the Weber fraction for the perception of difference between weights that you hold in

your hand is 1: 40, then how much weight would you need to add to a 10 lb. weight to make it just noticeably heavier? a. 0.10 lb b. 0.25 lb c. 0.40 lb d. 1.0 lb e. 4.0 lb