6. How can the internal validity threat of maturation be disruptive to psycholog

Question

6. How can the internal validity threat of maturation be disruptive to psychological research? 7. What is a quasi-experiment? How do quasi-experiments differ from traditional experiments? 8. Why are non-equivalent control group designs and time series designs classified as quasi experiments? Provide an example of each type of design, noting its strengths and weaknesses. How do cross-sectional designs and longitudinal designs differ from one another? 9. 10. What are some of the advantages and disadvantages associated with open-and closed-ended questions? When is it preferable to use one in favor of the other 11. Name several characteristics of good surveys 12. What is an Experience Sampling Method (ESM)? How are ESMs used by psychologists? 13. In what ways can applied or field research provide service to communities? Chapter 7 14. What are some of the challenges researcher face when they want to conduct research with non-traditional or special populations of research participants (i.e., those who are not traditional-aged college students)? 15. What are the benefits of conducting research with non-traditional or special populations of research participants (i.e., those who are not traditional-aged college students)? 16. What opportunities does external validity provide to researchers? 17. What is ecological validity? Provide an example.

Explanation / Answer

Maturation as a threat to internal validity refers to, understanding whether the effect on dependent variable is due to the manipulation of independent variable or personal factors. For instance, the researcher wants to know the effect of different learning styles (independent variable) on students (dependent variable), however, if a few students in the experimental group have a higher level of IQ, in comparison to the others, this would lead to misguiding results of the experiment. The experimenter would not know if the learning style had an effect on the dependent variable or was it due to personal attributes like intelligence that affected the results. Thus, maturation can turn out to be a passive threat to the experimental research.

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