Dizygotic twins can be described as ______.
A. being the same as identical twins
B. sharing about one half of their genes
C. being more similar to each other than ordinary siblings
D. occurring less frequently than monozygotic twins
Answer: B
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How could you measure the validity of a new test intended to measure nervousness?
a. Determine whether scores on the test form a normal distribution. b. Determine whether scores on the test correlate with hand shaking and voice tremor. c. Test people in two or more countries and see whether the results are similar. d. Test people repeatedly and see whether they get about the same score each time.
Just putting a larger portion of food on the plate influences people to eat more
a. True b. False Indicate whether the statement is true or false
Baddeley's model of working memory points out that
a. the capacity of the visuospatial sketchpad is limited. b. the limits of the phonological loop and the visuospatial sketchpad depend upon one another; if one process is active, the other cannot handle new material. c. all material must pass from the phonological loop into the visuospatial sketchpad. d. the phonological loop simply stores material, whereas the visuospatial sketchpad actively reinterprets that information.
The conditions of a true experiment allow a researcher to infer
a. Reliability b. Causality c. Validity d. Manipulation