SOLVED

131) Which of the following may generally be assumed to be true about reliability and validity? a. A test can be valid but unreliable. b. A test can be reliable but invalid. c. A reliable test must be valid. d. A test cannot be unreliable and invalid. 132) Research has demonstrated that above a certain high level of IQ, intelligence is no longer predictive of important real-world accomplishments. Psychologists call this ______________. a. the threshold effect b. a negatively skewed distribution c. deviation IQ d. a restriction of range 133) If you track the frequency by which popcorn kernels pop, few kernels pop early or late; most pop around the same time. This frequency chart is a good example of a ________ frequency graph. a. flat b. positively skewed c. negatively skewed d. normal bell 134) If you track the frequency of watch chimes in a crowded classroom, most watches will chime at the top of the hour, fewer will chime either slightly early or late, and fewer still will chime especially early or late. This frequency chart is a good example of a ________ frequency graph. a. flat b. positively skewed c. negatively skewed d. normal bell 135) What is the range of IQ scores that fall in the middle of the distribution, encompassing 95 percent of all people? a. 100-125 b. 90-120 c. 80-140 d. 70-130 136) Which of the following is not one of the diagnostic criteria for intellectual disability? a. Onset prior to adulthood b. Evidence of brain damage c. IQ below approximately 70 d. Inadequate adaptive functioning 137) The _________ severe the intellectual disability, the __________ likely it is to run in families. a. more; more b. less; more c. more; less d. less; less 138) Which of the following relationships exist between intelligence and a subset of individuals with Down Syndrome called mosaics? a. Mosaics have severely impaired IQs relative to the mild retardation seen in non-mosaic Down syndrome patients. b. Mosaics have relatively normal IQs relative to other Down syndrome patients. c. IQ tests for non-mosaic Down Syndrome patients are more accurate and have greater validity in representing an IQ score. d. There is no difference in IQ between mosaic and non-mosaic Down syndrome patients. 139) Regarding bell curve assumptions, which of the following is true? a. About 5% of the population will achieve an IQ test score above 150. b. About 15% of the population will achieve an IQ test score above 150. c. About 2% of the population will achieve an IQ test score above 150. d. About 10% of the population will achieve an IQ test score above 150. 140) Most standardized tests of intelligence have a distribution of scores that a. follows the normal curve. b. has a positive skew. c. has a negative skew. d. appears bimodal with two peaks of high frequency.