If a researcher changes a particular aspect of an experiment for an experimental group but not for the control group the researcher has changed the _________
causal variable
dependent variable
correlational variable
independent variable
independent variable
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During the relative refractory period, the ____.
A. sodium gates are firmly closed B. sodium gates are reverting to their usual state C. sodium gates are wide open D. potassium gates are firmly closed
For observational learning to occur, each of the following must happen except ________
a. being reinforced for imitating the model b. remembering what the model did c. paying attention to what the model does d. do what the model did
Which term refers to an infant's various levels of wakeful behaviors, such as alertness, fussing, and crying, and different levels of sleep?
A. sensitive periods B. states C. rhythms D. alternations
The mood and thoughts of suicidal people are MOST often characterized as:
A) anxious and irrational. B) angry and aggressive. C) sad and hopeless. D) tense and manic.