Which of the following is an example of perceptual learning task?
A. making a classically conditioned eye-blink response
B. recognizing broken drawings
C. recalling childhood events that occurred before age 9
D. recognizing songs learned in childhood before brain damage
Answer: B
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A biologist records the number of trout, bass, perch, and other types of fish caught in a local lake during a 2-week period. If the results are organized in a frequency distribution graph, what kind of graph should be used?
a. A bar graph c. A polygon b. A histogram d. Either a histogram or a polygon
What is Cronbach known for?
a. Developing measures to evaluate sources of error b. Creating the basics of multivariate analysis c. Developed the basics of contemporary measurement theory d. Distinguished between objective and subjective measures
In an experiment, the researcher was unintentionally talkative to one of the participant groups. What best describes the threat to internal validity and why is it a threat?
a. Randomness, since being talkative can make this particular group more relaxed and better able to perform. b. Participant-maturation interaction, since being friendly to one group can introduce a confound. c. History, since this unintended interaction was not part of the independent variable, a confound was introduced. d. Testing, since the other group might feel cheated for being treated more formally by the researcher, and this introduces counterbalancing.
With the Synapse Project, improvement in episodic memory was observed among the elderly who spent at least ______ cognitively engaged.
A. 2 hours per week for 2 months B. 10 hours per week for 3 months C. 16 hours per week for 3 months D. 20 hours per week for 1 month