Ethological theory:
A) offers the least detailed explanation of attachment
B) is rarely used by attachment researchers today
C) suggests that infants are biologically programmed for attachment
D) mothers learn to become attached to their infants but are not biologically prepared for attachment
C) suggests that infants are biologically programmed for attachment
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What happens to the standard error of Mas sample size increases?
a. It increases. b. It decreases. c. It stays constant. d. The standard error does not change in a predictable manner when sample size increases.
If other factors are held constant, which of the following sets of data is most likely to produce a significant mean difference?
a. A sample mean difference of 5 points with n = 5 for both samples b. A sample mean difference of 5 points with n = 10 for both samples c. A sample mean difference of 10 points with n = 5 for both samples d. A sample mean difference of 10 points with n = 10 for both samples
A research study compares the mean weight for a sample of n = 36 participants before they begin a 6-week diet and their mean weight at the end of the diet. This is an example of an independent-measures design
Indicate whether the statement is true or false
Which of the following is true of the average life expectancy in the United States?
a. It is higher for black females than for white males. b. It has more than doubled since 1900. c. It is higher for black males than white males. d. It is 18 years greater for females than for males.