Homework Answers
Reliability. If the same study is replicated again with the same participants, changes in factors like maturation and history will then yield different results.
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In a within-subjects research study, factors that change over time, such as history and maturation, can...
Time-related factors and other order effects can threaten internal validity for some within-subjects experiments. Describe the...
Time-related factors and other order effects can threaten internal validity for some within-subjects experiments. Describe the kind of study for which these factors can be a problem and explain how they can be a confounding variable in some within-subjects designs.
1. Ifa study includes random assignment but not a control group, the design may still be...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
A research study is conducted where 15 participants complete a 12-week control period followed by a...
A research study is conducted where 15 participants complete a 12-week control period followed by a 12-week exercise intervention. What type of research is this? True experimental Correlational Pre-experimental Quasi-experimental Question 2 (1 point) ✓ Saved What type of research collects fairly unstructured data via interviews and focus groups? Quantitative Qualitative Which type of research is attempting to establish the presence/absence of "cause- effect"? Correlational Descriptive Experimental Historical Question 4 (1 point) ✓ Saved When considering the threats to internal...
1. A(n) ________ study follows the same research subjects with repeat testing over a period of...
1. A(n) ________ study follows the same research subjects with repeat testing over a period of time that often lasts weeks to years. a. cross-sectional study b. longitudinal study c. case-controlled study d. observational study
In a between-subjects design, holding a potential confounding variable constant helps to reduce the variance within...
In a between-subjects design, holding a potential confounding variable constant helps to reduce the variance within treatment groups, however it also reduces the study's a. accuracy b. internal validity c. external validity. d. variance.
16)Define internal validity: a. The extent to which we can draw causal conclusions about a study...
16)Define internal validity: a. The extent to which we can draw causal conclusions about a study such as random and systematic error, confounding, and selection bias b. Exchangeability or how comparable the study group is to otherand explains generalizability or transportability 17. Define external validity: a. The extent to which we can draw causal conclusions about a study such as random and systematic error, confounding, and selection bias b. Exchangeability or how comparable the study group is to otherand explains...
Between-subjects designs are subject to threats from whereas within-subjects designs are subject to threats from a....
Between-subjects designs are subject to threats from whereas within-subjects designs are subject to threats from a. environmental variables; individual differences. b. individual differences; order effects c. order effects; individual differences. d. history effects; order effects.
Which of the following can direct replication studies change? A. The dependent variable B. The study...
Which of the following can direct replication studies change? A. The dependent variable B. The study procedures C. The participants D. The independent variable When conducting longitudinal research, researchers typically find ________ to be the most interesting. A. autocorrelations B. cross-sectional correlations C. cross-lag correlations D. multivariate correlations Which of the following is an advantage of small-N designs over large-N designs? A. Small-N designs take advantage of unique cases. B. Small-N designs have better experimental control. C. Small-N designs generalize...
Which of the following is not a factor that differentiates within-subjects and between-subjects designs? a. Within-subjects...
Which of the following is not a factor that differentiates within-subjects and between-subjects designs? a. Within-subjects designs tend to have fewer participants. b. Between-subjects designs are more effective in demonstrating cause-and-effect. c. Within-subjects designs are more likely to be confounded by time-related factors and order effects. d. Between-subjects designs are more likely to be confounded by individual differences.
Understanding the sampling process will contribute to your ability to critique research from a consumer's point...
Understanding the sampling process will contribute to your ability to critique research from a consumer's point of view. This week's Forum Discussion will help you to develop your sampling strategy based upon your PICOT. It should be approached in relation to the parameters or attributes of the study population, representative of the defined population, appropriateness of the sampling plan to the research design, appropriateness and justification of the sample size, and evidence that the rights of human participants (subjects) have...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
A research study is conducted where 15 participants complete a 12-week control period followed by a 12-week exercise intervention. What type of research is this? True experimental Correlational Pre-experimental Quasi-experimental Question 2 (1 point) ✓ Saved What type of research collects fairly unstructured data via interviews and focus groups? Quantitative Qualitative Which type of research is attempting to establish the presence/absence of "cause- effect"? Correlational Descriptive Experimental Historical Question 4 (1 point) ✓ Saved When considering the threats to internal...
In a between-subjects design, holding a potential confounding variable constant helps to reduce the variance within treatment groups, however it also reduces the study's a. accuracy b. internal validity c. external validity. d. variance.
Between-subjects designs are subject to threats from whereas within-subjects designs are subject to threats from a. environmental variables; individual differences. b. individual differences; order effects c. order effects; individual differences. d. history effects; order effects.
Which of the following is not a factor that differentiates within-subjects and between-subjects designs? a. Within-subjects designs tend to have fewer participants. b. Between-subjects designs are more effective in demonstrating cause-and-effect. c. Within-subjects designs are more likely to be confounded by time-related factors and order effects. d. Between-subjects designs are more likely to be confounded by individual differences.
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