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Comparison of Single-Subject Research and Case Studies
Although both single-subject research and case studies focus in detail on a small number of participants, they differ fundamentally in methodology and data analysis. Case studies represent a qualitative approach focused on understanding people's subjective experience through observation, resulting in relatively unstructured data (such as detailed interviews) that is analyzed using narrative techniques. Conversely, single-subject research is a quantitative approach that seeks to understand objective behavior through strict experimental manipulation and control, yielding highly structured data that is analyzed quantitatively.
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Research Methods in Psychology - 4th American Edition @ KPU
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Process of Single-Case Designs
Uses of Single-Case Designs
Comparison of Single-Subject and Group Research
Comparison of Single-Subject Research and Case Studies
Intensive Focus on Individuals in Single-Subject Research
Early History of Single-Subject Research
Experimental Analysis of Behavior
Theoretical Perspectives in Single-Subject Research
Reversal Design
AB Design
Visual Inspection in Single-Subject Research
Statistical Analysis in Single-Subject Research
Assumptions of Single-Subject Research
Vance Hall's Study on Teacher Attention
Single-Subject Research Designs
Which of the following best characterizes the methodology of single-subject research?
True or False: In single-subject research, the investigator focuses on the behavior of each individual participant as a separate unit of analysis, typically involving between two and ten people in a study.
A psychology researcher is designing a study using a single-subject methodology. Match each specific scenario description below with the core principle of single-subject research it demonstrates.
A researcher is utilizing a single-subject design to analyze whether a specific behavioral intervention causes a reduction in a participant's off-task behavior. To establish experimental control and identify a functional relationship between the intervention and the behavior, arrange the following steps in the correct logical sequence.
A researcher wants to design a quantitative study to test whether a new behavioral intervention reduces the frequency of 'vocal tics' in 3 specific participants. To create a rigorous experiment following the principles of small- design, which of the following protocols should the researcher construct to establish experimental control and demonstrate the intervention's effect on each individual?
True or False: Single-subject research is a qualitative methodology that focuses on subjective experiences rather than utilizing quantitative techniques to analyze objective behavior.
A psychologist reviewing a single-subject (small-) study with only four participants must judge whether the researcher compensated for the absence of a large sample size by applying strict _____ and control over each individual's behavior to ensure scientific rigor.
Match each researcher's study scenario with the corresponding core feature of single-subject research it demonstrates.
A psychologist is analyzing a study that focuses closely on the behavior of four participants. To categorize this methodology, the psychologist notes that since the statistical symbol for sample size is represented by , this type of study is referred to as a small-_____ design.
An editor must evaluate whether a newly submitted manuscript qualifies as a single-subject research design based on its methodological characteristics. Arrange the evaluation steps in the logical order the editor should perform them, from identifying the broad research paradigm to verifying specific design controls.
Disadvantages of Case Studies
Purpose of Case Studies
Advantage of Case Studies: Understanding Exceptional Individuals
Disadvantage of Case Studies: Researcher Bias
A researcher spends three years living with and documenting the life of a single, isolated individual who has had no contact with modern technology. The researcher's goal is to draw broad conclusions about the fundamental nature of human cognition without technological influence. What is the most significant scientific limitation of using this single-person investigation to achieve this specific goal?
Benefits of Case Studies
Case of Henry Molaison (H.M.)
Case of Anna O.
The Little Albert Experiment
Comparison of Single-Subject Research and Case Studies
Which statement accurately describes the type of data collected in a psychological case study?
A researcher conducts an in-depth, year-long investigation of a single patient with a rare memory disorder. The researcher collects detailed interview transcripts, behavioral observations, and also administers standardized neuropsychological tests that yield numerical scores. Because the study includes these numerical test scores, it no longer qualifies as a case study.
A neuropsychologist is designing a study of a patient who has developed a unique ability to remember every day of their life following a rare type of stroke. Match each specific research activity to the component of the case study method it represents.
Analyze the following research scenarios. Arrange them in order based on how well they align with the unique strengths of the case study method, from the scenario where it is most appropriate (1) to the scenario where it is least appropriate (3).
Imagine you are tasked with developing a new research protocol to study a unique individual who has regained functional sight after 40 years of total blindness. To create a rigorous 'case study' that captures the full depth of this 'rare condition' through an in-depth, longitudinal approach, which of the following combinations of research tools and timelines should you synthesize into your final plan?
Case Study of Anna O.
Limitations of Case Studies
True or False: In psychological research, the case study method is strictly limited to the investigation of single individuals and cannot be used to examine social units or specific events.
Arrange the typical stages of conducting a psychological case study in their logical order, from the initial identification of the subject to the final synthesis of findings.
A researcher conducts an in-depth, longitudinal analysis of a single patient with a rare memory disorder and concludes that a specific memory technique will be effective for all humans. A critic evaluating the scientific merit of this conclusion would argue that the case study method fundamentally lacks _____, which is the extent to which findings can be applied to the broader population.
Match each defining feature of the case study method to its accurate methodological implication for how research using this approach is conducted and interpreted.
A research ethics board is reviewing a proposal to investigate a single individual who, following a specific brain lesion, has completely lost the ability to form any new long-term memories—a condition so rare that fewer than a dozen cases have ever been documented. The proposed study would collect detailed interview transcripts, naturalistic behavioral observations, and standardized memory test scores over a three-year period. A critic argues the study is scientifically worthless because it examines only one person and therefore cannot produce statistically generalizable conclusions. Evaluate this critique: the critic correctly identifies that a _____, by definition, focuses on a single individual or unit and produces findings with limited generalizability; however, this limitation does not render the method scientifically worthless, because its primary purpose is an in-depth, longitudinal description of a subject whose rare condition is inaccessible through large-sample experimental designs.
Define the case study method in psychology as an observational research approach, and identify the primary subjects (e.g., individual, social unit, or event) it can examine, as well as the types of qualitative and quantitative tools typically used to gather information during such a study.
Based on the provided case context, explain how the researchers integrated both qualitative and quantitative observational data in their case study, and explain how this combination aligns with the definition and typical structure of a psychological case study.
Suppose you are designing an in-depth psychological investigation of a small, isolated group that recently survived a rare meteorological event. If you decide to apply the case study method to this scenario, identify what the primary subject of your case study would be, and state one qualitative and one quantitative measurement tool you would use to collect your data.
Learn After
Match each research characteristic with the approach it describes: single-subject research or case studies.
When comparing research methodologies, which of the following best describes the distinction between the quantitative approach of single-subject research and the qualitative approach of a case study?
A clinical researcher treats a patient with a rare phobia by introducing a specific exposure therapy and carefully measuring the number of panic-free minutes the patient experiences each day. This researcher is primarily conducting a case study because the research focuses on the treatment of a single individual.
A researcher transitioning from single-subject research to a case study must replace their quantitative analysis with narrative techniques. This shift is necessary because the focus has moved from objective behavior under experimental control to subjective experience, causing the data to change from being highly structured to being ________.
A researcher is evaluating a proposed study to determine whether its methodology aligns more closely with a Case Study or Single-Subject Research. Arrange the following research activities in order, starting with the one that most strongly reflects the qualitative/subjective approach of a Case Study and ending with the one that most strongly reflects the quantitative/experimental approach of Single-Subject Research.
You are constructing a research protocol to study a unique individual with a rare cognitive condition. Your objective is to create a two-part investigation: first, documenting the person's rich, subjective experience through narrative techniques; and second, conducting an experimental test to measure how their objective behavioral responses change under strict environmental control. Which of the following proposed structures correctly constructs these two parts by appropriately applying case study and single-subject research methodologies?
Although both single-subject research and case studies focus in detail on a small number of participants, single-subject research is a qualitative approach focused on subjective experiences, while case studies are a quantitative approach focused on objective behavior.
While both methodologies focus in detail on a small number of participants, case studies are qualitative and seek to understand the ________ experiences of individuals, whereas single-subject research is quantitative and seeks to analyze objective behavior under strict experimental control.
A student is reviewing five research scenarios. For each scenario, identify which methodological approach it represents — Case Study or Single-Subject Research — by analyzing the defining features present in the description.
A peer reviewer must determine whether a newly submitted manuscript should be classified as a case study or single-subject research. Arrange the reviewer's evaluative steps in the most defensible logical order, beginning with the first criterion to examine and ending with the final classification judgment.
Explain the fundamental differences between single-subject research and case studies in terms of their methodological approach (qualitative vs. quantitative), their focus of study, and how data is structured and analyzed.
Based on the provided case context, diagnose whether this research is a case study or a single-subject research design. Explain your decision by referencing the data structure, analysis method, and research focus mentioned in the text.
A clinical researcher wants to test if a new computer-based training program reduces attention-deficit symptoms in a single child. The researcher plans to measure the child's objective screen-focus time in minutes each day, systematically turning the training program on and off across different weeks. State whether the researcher should design this as a case study or a single-subject research study, and briefly justify your answer in 1-3 sentences.