Kevin Boyack and his colleagues generated a map of sciences, similar to a map of friendship networks on social media, by using ____
a. the number of doctoral dissertations in each field
b. the titles of journal articles
c. reference lists in journal articles
d. search terms related to psychology
c. reference lists in journal articles
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Answer the following statements true (T) or false (F)
1. The gate-control theory of pain states that signals arriving from pain receptors can be blocked by interneurons in the spinal cord. 2. The gate-control theory of pain states that signals arriving from pain receptors can be blocked by opiate drugs in the somatosensory cortex. 3. Information about balance is registered in the inner ear. 4. Motion sickness is caused by a mismatch between the information provided by auditory cues and vestibular feedback. 5. The vestibular system is composed of four types of touch receptors and thermoreceptors.
External validity means that:
A) an experiment used reliable measures of the independent variable. B) a correlation was established between an independent and a dependent variable. C) an experiment has been verified by a group of scientists not associated with the study. D) the variables in an experiment have been defined in a normal, typical, or realistic way.