Our sensory and perceptual systems respond primarily to

A medical doctor believes that the presence of

aromatherapy will reduce the anxiety of first-time mothers-to-be during labor and will increase their reported satisfaction with their care at his hospital. He randomly assigns mothers to give birth in a room either with or without aromatherapy. What is the independent variable in this example? A) Anxiety level during labor B) Number of previous birthing experiences C) Presence or absence of aromatherapy D) Satisfaction with hospital care

In a study that is described in the textbook, college undergraduates played either violent or nonviolent video games for 25 minutes, and then were asked to look at violent or nonviolent photographs

The research demonstrated that the brain response called __________ was underactive in those who had played violent videogames and then looked at violent photographs. a. dopaminergic plasticity b. inhibitory presynaptic potentials c. excitatory presynaptic potentials d. P3