The painkilling effect of placebos and acupuncture as well as the "runner's high" and the euphoria associated with childbirth are explained by the release of endorphins

What is an instinct?

What will be an ideal response?

Lavie's perceptual load theory suggests:

a) The amount of attention allocated to a main task depends on the load that our perceptual system is under. b) That distraction effects are greater when cognitive load is high than when it is low. c) High cognitive load reduces people's ability to use cognitive control to discriminate between target and distractor stimuli. d) All of the above