When interpreting confidence intervals when there are three or more means, if two or more intervals overlap slightly, we should conclude that
A. the population means differ.
B. the sample means do not differ.
C. the population means definitely do not differ.
D. we are uncertain about the true population mean difference.
D. we are uncertain about the true population mean difference.
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Whereas people with high self-esteem are likely to think "I am great," people with low self-esteem are likely to think, ____
a. "I am pretty great, but I could be even more fabulous if I tried harder" b. "I am so-so" c. "I am horrible" d. "I am the very worst person in the entire world"
All of the following are behavioral stress responses except ____
a. ?strained facial expressions b. ?aggression c. ?catastrophizing d. ?alcohol abuse
When a stimulus similar to the conditioned stimulus also elicits the conditioned response, the phenomenon is called _______
a) stimulus discrimination b) stimulus generalization c) spontaneous recovery d) second order conditioning
Developmental psychologists think that these factors contribute to a child's gross motor development:
a. genes and the child's own efforts to practice. b. genes and maturation of the brain c. genes, maturation of the brain, support from adults d. genes, maturation of the brain, support from adults, and the child's own efforts to practice.