Eighteen-month-old Joey is asked to share spinach or graham crackers with his mother in a social referencing experiment. Even though Joey prefers graham crackers, he might offer the spinach to his mother if she
A) makes a face when he offers the vegetable to her.
B) uses her voice and facial expressions to convey a preference for the spinach.
C) uses her voice and facial expressions to convey a preference for the graham crackers.
D) expresses no preference for either food.
B
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When sensory systems become less sensitive to unchanging stimuli, it is called
a. accommodation. b. sensory adaptation. c. precognition. d. threshold degradation. e. subliminal perception.
Grace is sitting in class when, without warning, her heart began to pound, her chest felt tight, and a feeling of dizziness came over her. She felt extremely fearful. Over the next few weeks, the same thing happened several times. Her doctor cannot find anything wrong with her heart. Grace is probably suffering from ____
a. ?generalized anxiety disorder b. ?obsessive-compulsive disorder c. ?panic disorder d. ?a phobia
The chief function of the control group in an experiment is that it
a. allows mathematical relationships to be established. b. provides a point of reference against which the behavior of the experimental group can be compared. c. balances the experiment to eliminate all extraneous variables. d. establishes causation.
Postconventional moral reasoning is based on abstract reasoning. It therefore depends on attaining Piaget's _______ stage of cognitive development
a) sensorimotor b) preoperational c) concrete operational d) formal operational