Which of the following best describes the means by which neurons communicate with each other?
a. Sodium ions from one neuron flow into a second neuron, and potassium ions flow out.
b. Potassium ions from one neuron flow into a second neuron, and sodium ions flow out.
c. Neurotransmitters flow across the synapse and attach to receptor sites.
d. Electrical charges cross the synapse.
ANSWER: c
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Which of the following statements is true?
a. Bullies are usually social misfits. b. Females tend to bully through relational aggression, males through physical aggression. c. Bullying tends to be a dyadic process (involving the bully and a victim) rather than a group-level process. d. Bullying is usually retribution for some previous harm done by the victim to the bully. e. Bullying is now considered to be a relatively normal conflict stage that most children pass through without any negative consequences.
A sample of n = 20 scores is transformed into z-scores. What is the mean for the set of 20 z-scores?
a. 0 b. 1 c. 10 d. Cannot be determined without more information
Teachers report that maltreated children behave in which way?
A. creative B. disciplined C. active D. angry
The extent to which tests or test items sample what they are supposed to measure is related to the measure's _______ validity
a. content b. construct c. criterion d. concurrent