Briefly explain MEG (magnetoencephalography) and its uses.
What will be an ideal response?
MEG (magnetoencephalography) involves using brain imaging machines to assess infants' brain activity. MEG maps brain activity by recording magnetic fields produced by electrical currents and is being used to assess such perceptual and cognitive activities as vision, hearing, and language in infants. The infant sits under the machine and when he or she experiences a word, touch, sight, or emotion, the neurons working together in the infant's brain generate magnetic fields and MEG pinpoints the location of the fields in the brain.
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Immediately after birth, birthing attendants examine the neonate using the Apgar measurement system.
Answer the following statement true (T) or false (F)
A research participant hears a tone, which is followed by a puff of air directed toward his eye. Later, he blinks when he hears the tone. Before ending the experiment, what could the researcher do in order to extinguish the blinking to that tone?
A. Repeatedly present the tone alone B. Repeatedly present the puff of air alone C. Increase the loudness of the tone D. Increase the amount of air that is directed toward the eye
Kim has a poor appetite and has experienced serious weight loss. She is unable to concentrate and make decisions. She often expresses feeling unworthy and guilty for things she has not done. She says she no longer cares about life and has talked about death and how she would welcome it. Psychologists would likely diagnose Kim with which of the following disorders?
a. schizophrenia c. major depression b. conversion disorder d. bipolar disorder
Because chi-square is a nonparametric test, there is a greater probability of _____ when using it than when using a parametric test
a. making a Type II error c. overgeneralizing b. making a Type I error d. having low internal validity