2. Given Problem 21, what interaction effect occurred? Cell phone use interacted

Question

2. Given Problem 21, what interaction effect occurred? Cell phone use interacted with type of call, Traffic condition interacted with driving speed, Cell phone use interacted with traffic condition, or No interaction occured

3. Given Problem 21, what type of research design was used? Correlational study, Survey, Pretest/posttest design, or 3X2 factorial design

4. Given Problem 21, what conclusions can you draw from the study? Driving performance increases cell phone use, Driving performance increases under heavy traffic conditions, Talking on a cell phone decreases our driving performance, particularly under heavy traffic conditions, or Talking on a cell phone increases driving performance

1. Problem 11 12. Problem 12 13. Problem 13 14. Problem 14 15. Problem 15 16. Problem 16 17. Problem 17 18. Problem 18 19. Problem 19 20. Problem 20 21. Problem 21 . A psychologist who studies attention designed a study to investigate whether talking on a cell phone interferes with driving. She randomly assigned 60 subjects to three conditions: (a) talking while holding cell phone, (b) talking while using a car speaker phone, and (c) no cell phone control condition. All suhjects participated in 20 minutes of driving in a high-fidelity car simulator Driving performance was measured by a composite score that assessed how well the driver maintained the speed limit, stopped for stop signs and red lights, and signalled appropriately when turning or changing lanes. Each subject drove 10 minutes under light driving conditions and 10 minutes and heavy traffic The results showed that there was no difference in driving performance between hand-held cell phones and hand-free cell use, but both of these conditions were significantly worse than the control condition of no cell phone. Further analysis showed that the difference between the two cell phone conditions and the control condition was significantly higher when subjects were driving under heavy traffic compared to light traffic. Overall, performance was worse for heavy traffic than light trafic Topic: Analysis of Variance . Term: anova 22. Problem 22 23. Problem 23 24. Problem 24 25. Problem 25 26. Problem 26 27. Distribution Calculator

Explanation / Answer

1. The main effect that occured was cell phone use and traffic condition since the perofrmance was worse when participants used cell phones and when they drove in heavy trafiic condictions.

2. Cell phone use interacted with the traffic condition as the performance was worse when participants used cell phones and when they drove in heavy traffic conditions.

3. Since scores were provided for each condition (light /heavy) for three types of drivers (hand held mobile/hand free call/no phone) ,we can say that 3 by 2 factorial design was used .

4. From the inputs provided we can safely asume that talking on a cell phone decreases our driving perofrmance particularly under heavy traffic conditions.

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