A group of mental disorders that are characterized by real, multiple, and involuntary physical symptoms that have no known physical causes are called:
a. anxiety disorders c. somatoform disorders
b. conversion disorders d. dissociative disorders
C
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The results of an independent-measures research study are reported as "t(22) = 2.12, p< .05, two tails.". For this study, what t values formed the boundaries for the critical region?
a. ±2.080 c. ±2.069 b. ±2.074 d. ±2.064
Rachel can sort objects by size or color and can solve simple addition and subtraction problems. However, she cannot think logically about abstract ideas such as freedom and justice. Rachel is most likely in Piaget's ____ stage of cognitive development.?
a. ?sensorimotor b. ?preoperational c. ?concrete operational d. ?formal operational
You are watching a pigeon pecking a key for food reinforcement. The pigeon pecks the key at a very high, steady rate and does not stop, even when the food is delivered. Based on what is known about the pattern of responding produced by various schedules of reinforcement, you should conclude that the reinforcement schedule that is in place for this pigeon is a:
a. variable-ratio schedule b. fixed-ratio schedule c. fixed-interval schedule d. variable-interval schedule
According to the textbook, are the tendencies to engage in object categorization and social categorization (regardless of content) tendencies that seem to be innately programmed in people, or tendencies that seem to be culturally learned?
A. Both seem to be innately programmed. B. Both seem to be culturally learned. C. Categorization of objects seems to be innately programmed, but social categorization seems to be culturally learned. D. Social categorization seems to be innately programmed, but categorization of objects seems to be culturally learned.