In a multi-institutional study of happiness, researchers found that the gene monoamine oxidase A (MAOA) was associated with significantly greater feelings of happiness, but this effect was found only among ________

Examine the proposed existence of a fifth stage of cognitive development. Describe the characteristics of this fifth stage. What evidence for it exists? What doubts have been raised regarding its likelihood?

What will be an ideal response?

After pairing a loud noise with a white rat many times, the sight of the rat would cause little Albert to cry. Crying is an example of a(n) __________

a) unconditioned stimulus. b) conditioned stimulus. c) unconditioned response. d) conditioned response.