One of the primary reasons that behavior geneticists study identical twins is because identical twins are
A) usually reared within the same family.
B) more genetically similar than other biological siblings.
C) generally treated similarly by the people around them.
D) more likely to engage in active niche-picking.
B
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Symptoms of PTSD are grouped into which of the following major categories?
a. Re-experiencing of traumatic event, avoidance of stimuli associated with event, negative alterations in mood or cognition, and increased arousal or reactivity b. Re-experiencing of traumatic event, avoidance of stimuli associated with event, and anxiety c. hypervigilance, avoidance of stimuli associated with event, and exaggerated startle response d. avoidance of stimuli associated with event, symptoms of increased arousal, and symptoms of suicidality
Which of the following is a system for managing and altering behavior through the immediate reinforcement of selected responses with poker chips or slips of paper that can be exchanged for food and/or special privileges?
a. a time-out system b. a token economy c. systematic desensitization d. an EMDR program