The neuroimaging technique that uses EEG recordings to assess changes in brain activity as a function of some external stimulus occurs is called __________

Fragile X syndrome

A) is an example of polygenic inheritance. B) occurs when there is a sudden but permanent change in a segment of DNA. C) is the most common inherited cause of intellectual disability. D) occurs more often in females than males because the disorder is X-linked.

Subjects are said to be assigned randomly when

a. they are selected to participate in an experiment from a sample which is representative of the larger population. b. they each have an equal chance of being assigned to either the experimental or control group. c. they are assigned to experimental and control groups so that the groups differ on some critical variable before the experiment begins. d. neither the experimenter nor the subject knows whether the subject is in the experimental or control group.