A) ectoderm
B) mesoderm
C) endoderm
D) trophoblast
B) mesoderm
C) endoderm
D) trophoblast
If you wanted to determine whether people are faster at responding to a high intensity light than to a low intensity light you might do an experiment in which participants push a button whenever either a high or low intensity light occurs. If you were concerned with order effects such as learning but also concerned that an equal number of low- and high-intensity trials be presented, you might use
A) randomization within blocks.
B) control variables.
C) a confounding variable.
D) reverse ordering.
A
Psychology
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The __________ becomes the nervous system.
Psychology
By pairing the ringing of a bell with the presentation of meat, Pavlov trained dogs to salivate to the sound of a bell even when no meat was presented. In this experiment, the presentation of the meat was the _______
a. unconditioned stimulus b. unconditioned response c. conditioned stimulus d. conditioned response
Psychology
________ reflects the idea that if people can "aggress" in harmless ways, built-up aggressive energies will diminish, reducing the odds of further aggressive behavior
a. Social learning b. Displacement c. Catharsis d. Fantasy inhibition
Psychology
Spatial summation describes the act of combining input occurring ______.
A. simultaneously at different locations B. a short time apart at different locations C. simultaneously from the same input D. a short time apart from the same input
Psychology