Researchers use _________________ to determine whether the difference between groups is statistically significant
A) correlation coefficients
B) descriptive statistics
C) hypothesis testing
D) vector analysis
Answer: C
Rationale: When researchers determine the significance of their results, they use a set of procedures called a hypothesis test, which measures the difference between the means of the two groups relative to the variability one would expect due to chance in the means (which is calculated based on the standard deviation and the size of the sample). The results of a hypothesis test will tell us if the two groups are significantly different (different because of the independent variable) with a certain degree of probability.
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An excitatory message causes:
a. channels to open in the neuron's membrane that allow chloride ions to flow out b. channels to open in the neuron's membrane that allow sodium ions to flow in c. channels to open in the neuron's membrane that allow potassium ions to flow in d. the neuron's sodium/potassium pump to be inactivated
________ refers to a learned negative attitude toward a person based on that person's membership in a particular group
a. The Asch effect b. Discrimination c. Prejudice d. Normative justice e. Conformity
The major principle illustrated by Turner's syndrome is that __________.
A. female secondary sexual characteristics appear without the ovaries B. ovaries are necessary for development of the Müllerian system C. ovaries are not necessary for development of the Müllerian system D. male fetuses produce Müllerian-inhibiting substance
Answer the following statement(s) true (T) or false (F)
Violent sexual material, in the form of violent pornography or embedded violent sexual acts, has the most serious psychological effects