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Practical or Ethical Constraints Requiring Non-Experimental Research
Even when a researcher's question addresses a potential causal relationship, a non-experimental design is required if practical or ethical barriers prevent the manipulation of the independent variable or random assignment. In such cases, researchers cannot deliberately alter conditions and must instead rely on the observation of pre-existing, naturally occurring differences to investigate the phenomenon.
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Research Methods in Psychology - 4th American Edition @ KPU
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Single-Variable Research
Non-Causal Statistical Relationship
Practical or Ethical Constraints Requiring Non-Experimental Research
Broad and Exploratory Research
Which of the following situations makes non-experimental research the necessary and appropriate choice for a study?
Match each research scenario to the primary condition that makes a non-experimental design the appropriate choice.
A researcher wants to investigate whether experiencing a high-magnitude natural disaster leads to long-term post-traumatic stress symptoms. Arrange the logical steps the researcher would take to analyze and conclude that a non-experimental design is the necessary choice for this study.
When a researcher determines that a research question requires exploring the broad and subjective experiences of survivors of a natural disaster, they are making a scientifically sound judgment by choosing a non-experimental design, as the complexity of subjective experience is fundamentally incompatible with the variable manipulation required for an experiment.
You are tasked with proposing a novel research framework to investigate the 'psychological impact of being a long-term caregiver for a spouse with a chronic illness'. Given that you cannot ethically or practically manipulate the independent variables, which of the following proposals correctly synthesizes the scientific conditions necessary to justify a research design that avoids experimental manipulation?
A researcher must use an experimental design to study potential causal relationships, even when manipulating the independent variable is ethically or practically impossible.
A researcher wants to study the relationship between a person's birth order (e.g., being an only child vs. having siblings) and their level of extraversion. This study must use a(n) _____ design because birth order is a variable that the researcher cannot ethically or practically manipulate.
Read each research scenario and match it to the condition that makes a non-experimental design the appropriate choice for that study.
A social psychologist collects survey data showing that college students who report higher loneliness scores also tend to report lower academic motivation. Because loneliness was measured rather than manipulated, the researcher can establish only a _____ between the two variables and cannot rule out that a third variable—such as depression—accounts for both outcomes.
A researcher wants to study whether early childhood exposure to high levels of air pollution impairs cognitive development in school-age children. She must evaluate whether a non-experimental design is justified and select the best approach. Arrange the following evaluation steps in the correct logical order.
Describe the four distinct conditions under which non-experimental research is the appropriate or necessary choice instead of an experimental design, according to psychological research methods.
Based on the provided context, explain why Dr. Aris must use a non-experimental design for this study, identifying the specific constraint that prevents an experimental design.
A clinical psychologist wants to measure the prevalence of generalized anxiety disorder symptoms among incoming university freshmen using a standardized self-report scale. Apply your knowledge of research designs to state whether an experimental or non-experimental design is appropriate for this study, and justify your choice in one or two sentences.
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Example of Practical or Ethical Constraints Requiring Non-Experimental Research: Hippocampus Damage
Under what condition is a researcher required to use a non-experimental design to investigate a potential causal relationship?
In psychological research, certain barriers prevent researchers from using experimental methods even when investigating causal questions. Match each description with the concept that explains why or how a non-experimental design is used.
A researcher wants to study the long-term effects of heavy alcohol consumption during pregnancy on a child's cognitive development. Because it is unethical to deliberately assign pregnant women to drink alcohol for research purposes, the researcher must use a non-experimental design to compare children whose mothers chose to drink with those who did not.
A researcher is investigating whether long-term social isolation causes cognitive decline in the elderly. Arrange the steps of the researcher's analysis to determine why a non-experimental design must be used for this causal investigation.
When practical or ethical barriers prevent the manipulation of an independent variable, researchers must rely on the observation of pre-existing, naturally occurring differences.
In a scenario where a researcher wishes to study a causal relationship but finds that manipulating the independent variable is prohibited by ethical standards, what characterizes the resulting non-experimental approach?
In evaluating the design for a study on the long-term cognitive effects of witnessing domestic violence in childhood, a researcher concludes that a non-experimental design is the only viable option. This decision is based on the assessment that the _____ of the independent variable is prohibited by ethical standards, making a true experiment impossible.
Match each hypothetical research scenario with the appropriate methodological concept or constraint based on the conditions for non-experimental research.
A researcher is studying the potential causal relationship between localized brain damage and memory loss. Because they cannot ethically damage participants' brains, they must analyze this phenomenon by relying on the observation of _____ differences.
Evaluate the research scenario of investigating whether childhood lead exposure causes learning disabilities, and order the steps the researcher must take to justify and implement a non-experimental design.