bt hosted cur y edu webapps / assessment /take iaunch jsp?course assessment id--
ID: 3465676 • Letter: B
Question
bt hosted cur y edu webapps / assessment /take iaunch jsp?course assessment id--i í 40828_1 &course-d;' i 4 g6061 t&content; id- 351 29 Take Test: Test #4 , 2018 Sprin RESEARCH STUDY 13.2: Dr. LaGuardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. He conducts a quasi-experimental study in which he examines football players before and after the regular season using the Benton Facial Recognition Test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. He finds that players who had concussions during the regular season performed worse on the Benton Facial Recognition Test than did players who did not experience Which of the following is true regarding external validity in Dr.LaGuardia's study? Oa. Because Dr. LaGuardia selected participants who actually experienced concussions, the study O b. Because Dr. LaGuardia's study is a quasi-experiment, it is impossible to obtain O c. Because Dr. LaGuardia's dependent variable was assessed in the laboratory, the study O d. Because Dr. LaGuardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure. QUESTION 31 25 po Dr. Green is interested in conducting a 2 x 2 x3 within-group factorial design, with 20 participants in each cell. How many participants does she need overal? O a. 20 b. 40 c. 80 d. 240 ! Submit to save and subhmit. Ciek Se All Ansvers to sove all ansvers Save All AnswersExplanation / Answer
20. The correct answer is Option C. Because the study was conducted in the laboratory, it has limited external validity.
21. The correct answer is Option A. There is a requirement of 20 participants only as it is a within group experiment.
22. The correct answer is Option A. This participant sample can be used to generalise to the population.
23. The correct answer is Option A. When interrogating experiments, one should focus on internal validity.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.