The degree to which treatment effects in an experiment can be accounted for by the
theoretical mechanisms represented in the independent variables is called _______.
a. face validity c. internal validity
b. construct validity d. external validity
B
Psychology
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In 1998, research conducted by Wakefield and colleagues was published that suggested vaccinations cause autism. The study was retracted from the journal years later because:
a) the study was not peer-reviewed. b) the results of the study were fabricated. c) autism was not operationally defined. d) the study did not include statistics.
Psychology
People with severe intellectual developmental disorder outnumber those with mild intellectual developmental disorder
Indicate whether the statement is true or false
Psychology