FREE AND STUDY GAMES ABOUT RS CH 9 EXAM

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FREE AND STUDY GAMES ABOUT RS CH 9 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -91 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Lack of poor calibration of measuresChanges in criteria followed by tester.....are examples of what?

Answer:

Single Group Threats- Instrumentation

Question 2: Low Statistical Power

Answer:

Power of a statistical test concerns its ability to reject the null hypothesisThis allows a conclusion to be made that a real relationship exists between the IV and DVs

Question 3: What are the 4 threats to external validity?

Answer:

Interaction of Treatment and Selection, Interaction of Treatment and Setting, Interaction of Treatment and History, Reactive or Interactive Effects of Testing Question 4: Concerns the researcher's goals & how well experimental results can be generalized... is an example of which threat to validity?

Answer:

CONSTRUCT VALIDITY OF CAUSES AND EFFECTS

Question 5: Statistical conclusion Validity:(quote)

Answer:

Is there a relationship bewtween the independent and dependent variables?

Question 6: Compensatory Equalization of Treatments

Answer:

The experimental treatment is considered a desirable service or condition by the person administering the conditionConsequently, those administering the service or condition may try to even out experiences for those NOT receiving the condition

Question 7: Single Group Threats- Maturation

Answer:

Passage of time independent of external eventsMay cause participants to respond differently on subsequent testsA concern if intervals between tests are long Question 8: Statistical conclusion Validity:(def)

Answer:

Refers to the appropriate use of statistical procedures for analyzing data,Concerns the inappropriate use of statistical procedures for analyzing dataThis can lead to invalid conclusions about the relationship between IV and DV Question 9: Order effects can also occur if treatments or measurements are given

Answer:

given in the same order each time administered

Question 10: Single Group Threats- Testing

Answer:

Potential effects of pretesting or repeated testing on the DVJust the act of collecting data changes the

response that is being measuredReactive measurements:

Question 11: Ambiguity About Direction Of Causal Influence

Answer:

Did X cause Y or Y cause X?

Question 12: Construct validity of causes and effects:

Answer:

Refers to the theoretical conceptualization of hte independent and dependent variables: It concerns how the intervention and response variables are theoretical conceptualized by the researchers Question 13: This will potentially obscure the treatment effects and make the groups look more alike.... is an example of what?

Answer:

Compensatory Equalization of Treatments Question 14: INTERNAL VALIDITY- Three components of causality:

Answer:

Temporal precedence, Covariation of cause and effect, No plausible alternative explanations

Question 15: Multiple Group Threats- Selection-history effects

Answer:

Experimental groups have different experiences between pretest & posttest Question 16: CONTROLLING THREATS To Internal Validity- Random assignment and use of a

control groups help guard against:

Answer:

History up to the start of the study, Maturation, Selection bias, Statistical regression, Testing, Instrumentation & selection interactions Question 17: What happens if : If the sample size is too small or extraneous sources of variation are not controlled

Answer:

significant effects may be missed(Low Statistical Power)

Question 18: Threat to External Validity- Interaction Of Treatment And Setting

Answer:

Results obtained from pts in one setting cannot be generalized to another settingTreatments that are effective under very constrained conditions (laboratory) may not effective under less constrained conditions (clinic)This is the "real world" issue

Question 19: Importance lies in operational definitionsand A study can be internally sound but have no practical application... is an example of which threat to validity?

Answer:

CONSTRUCT VALIDITY OF CAUSES AND EFFECTS

Question 20: Multiple Group Threats- Selection-maturation effects

Answer:

Experimental groups experience maturational change at difference speeds Question 21: CONTROLLING THREATS To Internal Validity- Other techniques:

Answer:

Matched-pairs, Within subjects designs, Placebo, Blind setup, Double-blind setup Question 22: Threats To Internal Validity - Single Group Threats:

Answer:

History, Maturation, Attrition (aka experimental mortality), Testing, Instrumentation, Statistical regression Question 23: THREATS TO DESIGN VALIDITY Four Categories of Threats:

Answer:

• Statistical Conclusion validity
• Internal validity
• Construct validity
• External Validity

Question 24: Not using this analysis (Failure to Use Intention to Treat Analysis) technique will potentially result in

Answer:

potentially result in the researcher overestimating a treatment effect

Question 25: Single Group Threats- History

Answer:

Confounding effect of specific eventsThe event occurs after introduction of the IV or between the pretest and posttestNot as problematic if timeframe is short