Riley is unresponsive to most social stimuli. He rarely smiles, talks, or makes eye contact with others. He seems indifferent to everyone, including his parents. He engages in solitary, ritualistic behaviors such as constantly flapping his hands. He sometimes goes into sudden tantrums or panics. He also insists on the same familiar food each day. Riley's disorder is most likely __________.
A. autism spectrum disorder
B. childhood schizophrenia
C. intellectual disability
D. avoidant disorder
Answer: A
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Which of the following is a reason the embryonic period is the most vulnerable period of development?
A. Nearly two-thirds of embryos fail to complete development, resulting in miscarriages. B. Brain development is nearly complete by the end of the embryonic period and thus vulnerable only at this time. C. It is when all of the major organs and body parts develop in rudimentary form and are potentially sensitive to environmental toxins. D. The embryo is small and weak and unable to resist toxins in the mother's body.
The textbook takes the position that observed differences between minority and non-minority groups might be attributed to
a. biased tests. b. biased test administrators and academicians. c. unequal access to adequate education and stimulating experiences. d. inherent differences between the groups.
With meanings, OVEREXTENSION is to UNDEREXTENSION as ____ is to ____
a. GENERALIZATION :: DISCRIMINATION b. GATHER :: DISTRIBUTE c. COO :: BABBLE d. PHONOLOGY :: MORPHOLOGY
What is the most sensitive area of the retina?
a. blind spot c. pupil b. fovea d. presbyopia