When Walter devotes attention and practice to completing tax returns and has gained experience in that area, he is demonstrating __________
a) expertise
b) sensory memory
c) long-term memory
d) selective optimization
Answer: a
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For a between-subjects experiment, any factor that increases the variance within treatments also increases the likelihood of finding a significant difference between treatments
a. True b. False Indicate whether the statement is true or false
The sophistication of a child's language abilities depends upon the child's:
a. parents ability to transmit language skills b. peers ability to transmit language skills c. level of cognitive development d. level of environmental learning
_____ occurs when participants decide if they wish to be studied in the experimental or control group.
A) Self-selection B) Random assignment C) Informed consent D) Random sampling
What does the intercept tell us about the study?
A. If an employee does not take any vitamin C, the expected number of sick days is 0.5. B. If an employee takes 1 g of vitamin C, the employee is expected to have 3 sick days. C. If an employee takes 0.5 g of vitamin C, then the employee will have no sick days. D. If an employee takes no vitamin C, then the employee is expected too have 3 sick days.