Within-subjects designs are most useful when individual differences are ____
a. large and there are many participants available
b. large and there are relatively few participants available
c. small and there are many participants available
d. small and there are relatively few participants available
b
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Rafael's brother always says, "I'm going to get you," just before he hits Rafael. Alan's brother often says, "I'm going to get you," but doesn't always hit Alan afterwards. Based on the work by Rescorla, you should predict that when these boys hear the words, "I'm going to get you," Rafael will show
a. an unconditioned response, while Alan will show a conditioned response. b. a stronger conditioned response than Alan will show. c. a weaker conditioned response than Alan will show. d. a conditioned response, while Alan will show an unconditioned response.
The mean is the
A. 45th percentile B. most commonly occurring score C. arithmetic average D. variability of scores
In order to calculate Pearson correlation coefficient, you must first calculate ______.
A. sum of squares B. sum of deviations C. sum of products D. standard deviations
The army of highly specialized cells and organs that works to identify and search out foreign invaders such as fungi, viruses, parasites, and bacteria is called the __________
a) immune system. b) endocrine system. c) sympathetic nervous system. d) respiratory system.