Example of External Validity Concerns in Single-Subject Research
An example of external validity concerns in single-subject research involves a study showing that a specific treatment reduces self-injury in two children with intellectual disabilities. While the treatment effect may be strong for these two individuals, researchers face the challenge of determining whether this success can be generalized to other children with intellectual delays who were not part of the original study.
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Research Methods in Psychology - 4th American Edition @ KPU
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Addressing External Validity in Single-Subject Research
Example of External Validity Concerns in Single-Subject Research
Generalizability of Strong Effects in Single-Subject Research
Why is the external validity of single-subject research frequently questioned by critics?
If a single-subject study demonstrates that a specific behavioral intervention successfully reduces self-injury in two children, a critic questioning the study's external validity would argue that these results may not necessarily apply to other children in the broader population.
A researcher conducts a single-subject study with three children to evaluate a new social-skills training program. Match each element of this research scenario to its role in a critique of the study's external validity.
A researcher finds that a new intervention successfully reduces social anxiety in two college students. Arrange the following logical steps to represent the process of analyzing why these findings might not apply to the broader population.
Generalization of Single-Subject Self-Injury Treatment
Replication for External Validity in Single-Subject Research
An educational psychologist conducts a single-subject study and demonstrates that a specialized visual-schedule intervention successfully reduces transition-related anxiety in two specific children with developmental delays. If a critic questions the external validity of these findings, what is the core of their concern?
A peer reviewer evaluates a single-subject study involving two participants and concludes that the findings should not be used to inform national healthcare guidelines. This judgment is based on the study's inherent deficiency in _____ validity.
Critics of single-subject research frequently question its external validity because of the difficulty in knowing whether the observed treatment effects will successfully _____ to other individuals in the broader population.
A clinical psychologist publishes a single-subject study showing that a new behavioral intervention successfully reduces self-injury in two children with intellectual disabilities. If they claim this study proves the treatment will be effective for all children with intellectual delays, this claim is invalid because it ignores the inherent external validity concerns caused by the small sample size of single-subject designs.
A researcher publishes a single-subject study examining a treatment for self-injury. Match the elements from the study's critique to their correct descriptions or roles in evaluating external validity.
A researcher claims a self-injury treatment is ready for general use based on a single-subject study of two children. Order the steps an evaluator should take to assess the external validity of this claim, from the initial observation to the final evaluation.
Describe the primary reason why critics frequently question the external validity of single-subject research, and state what specific difficulty they point out regarding the treatment effects observed in these studies.
Explain why advocates of group research would question the researcher's claim that this treatment is ready for widespread adoption. In your explanation, demonstrate your understanding of the relationship between sample size and external validity in this context.
A school psychologist conducts a single-subject study with three students and finds that a new mnemonic strategy significantly improves their spelling test scores. Applying the external validity concerns characteristic of single-subject designs, what main question should a critic ask about these findings before recommending the strategy for all students in the school district?
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In a single-subject study demonstrating that a specific treatment successfully reduced self-injurious behavior in two children with intellectual disabilities, the main external validity concern is whether the treatment effect can be generalized to other children with intellectual disabilities who were not included in the study.
A single-subject study demonstrates that a specific behavioral intervention successfully reduces self-injurious behavior in two children with intellectual disabilities. Which of the following best explains why this finding raises a concern regarding external validity?
In a single-subject study, a researcher finds that a 'weighted vest' reduces hyperactivity in two boys with ADHD. Match each research observation or action to its corresponding implication for validity.
A researcher conducts a single-subject study where a specific treatment successfully reduces self-injury in two children with intellectual disabilities. Arrange the following steps to reflect a logical analysis of the study's validity, moving from the initial evidence to the identification of external validity concerns.
In the research example involving a treatment that reduces self-injury in children, what is the primary challenge that represents a concern for external validity?
True or False: Demonstrating that a behavioral intervention reduces self-injury in children with intellectual disabilities is sufficient to resolve the concern that the findings may not apply to other children with similar disabilities.
A researcher claims that a behavioral treatment for self-injury is 'proven effective' for all children with intellectual disabilities based on success with only participants. To critically evaluate the scientific merit of this broad conclusion, one must recognize that the study's primary limitation is its lack of _____, which prevents the findings from being reliably generalized to the broader population.
A researcher conducts a single-subject study showing that a behavioral treatment reduces self-injury in two children with intellectual disabilities. Match each element of this study to the external validity concept it best illustrates.
When analyzing why a single-subject study demonstrating that a behavioral treatment reduced self-injury in two children with intellectual disabilities cannot be used to conclude that the treatment will work for all children with intellectual delays, a researcher identifies that the main limiting factor is the _____ of participants in the original study.
A school psychologist must decide whether to recommend a self-injury treatment — shown effective in a single-subject study with two children with intellectual disabilities — to a district serving many children with intellectual delays. Arrange the following evaluative steps in the most logical order for arriving at a justified recommendation.
Describe the textbook example illustrating external validity concerns in single-subject research. In your description, identify the targeted behavior, the number of participants studied, the treatment's outcome for those participants, and the primary question or challenge regarding generalizability that researchers face based on this outcome.
Evaluate the psychologist's recommendation. Explain the challenge of external validity in this scenario and explain why a strong treatment effect in this study does not automatically justify district-wide implementation for all children with intellectual delays.
A clinical psychologist wants to apply the behavioral treatment from the self-injury study (which successfully helped children with intellectual disabilities) to a new patient with similar intellectual delays. Based on the external validity limitations of single-subject designs, what must the psychologist do to determine if the treatment is actually effective for this new patient?