SOLVED

21)One of the major reasons why it is important to perform multiple studies when employing differential designs is that A)it is necessary to use a huge sample size. B)it is necessary to test and retest one ideal comparison group. C)there is no one ideal comparison group. D)it is necessary to rule out researcher biases. 22)Differential research studies that use multiple comparisons have more than one A)control group. B)naturalistic group. C)correlation group. D)All of the above. 23)In differential research designs, A)ideal comparison groups are easy to find. B)it is impossible to find good comparison groups. C)comparison groups are unnecessary. D)it is difficult to find ideal comparison groups. 24)Issues of sampling A)are never the same from one study to the next. B)are the same regardless of the type of research. C)are seldom of importance in research. D)are important only in differential research designs. 25)Random sampling A)is necessary in order to generalize from a sample to a larger population. B)is a convenient but unnecessary procedure in research. C)has no impact on the ability to generalize to a larger population. D)is necessary in order to protect internal validity. 26)If we were doing a study in which we wanted to apply the findings to the whole population of Canada A)draw a nonrandom sample from all of Canada. B)take a random sample from all of Canada. C)use only participants from our local area. D)use a nonstratified local sample. 27)One of the reasons it is NOT possible to obtain a random sample from all patients with schizophrenia is that A)medication presents a confound. B)it would be unethical to do so. C)schizophrenia does not really differ from depression. D)it would be prohibitively expensive. 28)Having limited access to only one type of psychiatric patient, for example, poses a serious threat to A)generalizability. B)replicability. C)believability. D)measurement accuracy. 29)Sampling biases pose a serious threat to A)replicability. B)generalizability. C)credibility. D)measurement accuracy. 30)In differential research studies of psychiatric patients, the factor that most affects generalizability is A)the intelligence of participants. B)the number of participants that drop out. C)the diagnostic system used. D)the psychiatric training of the researcher. Â