External validity in an experiment is most related to:
a. participant assignment to groups.
b. representativeness of the sample.
c. confounding variables.
d. a pretest.
B
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Neurons communicate with both electrical and chemical signals. Scientists have shown that chemical communication is the preferred form as it is faster.
Answer the following statement true (T) or false (F)
The main difference between modern psychology and earlier attempts to understand the mind and behavior is psychology's use of ________________
FIll in the blank with correct word.
The _____ conflict tends to occur when an individual must make a decision based on two undesirable options
a) approach-attend b) avoidance-approach c) avoidance-avoidance d) approach-approach
According to Freud, the period in which boys play with boys, girls play with girls, and neither has much interest in the opposite sex is the ______ period
a. anal c. latency b. oral d. genital