QUESTION 29 1. What is an advantage of using Pre-Experimental designs? Rely primarily on volunteers or self-selected subjects Allow researchers to carry out studies in natural, real life settings and increase external validity Enable researchers to extert a great deal of control over extrinsic and intrinsic variables and strengthen internal validity Allow researchers to gather information when no other research design can be applied or that more research would be helpful QUESTION 30 1. A researcher is concerned that experimental results obtained with college students may not apply to adults in the general population. This illustrates a concern with validity. a. correlational b.internal c. external d. experimental QUESTION 31 1. The degree to which your research results generalize beyond the specific characteristics of your study refers to a. external validity b. reliability c. internal validity d. general validity QUESTION 32 1. After measuring a group of individuals, a researcher finds that Jared's score is three times greater than Jasmin's score. These measurements must come from a(n) scale. a. interval b.ratio c. ordinal d. nominal QUESTION 33 1. Determining a person's reaction time (in milliseconds) would involve measurement on a(n) measurement. Ca. nominal b. ordinal c. interval d. ratio scale of