Data Collection Methods - Eppp Knowledge
- Which observational sampling records every instance of a target behavior as it occurs?
- Event sampling. Focusing on specific events ensures comprehensive documentation of infrequent or targeted behaviors as they naturally occur.
- What is a major strength of observational methods compared with surveys?
- Direct measurement of behavior in context (higher ecological validity). Observing actions directly in natural or controlled settings provides authentic behavioral data, enhancing relevance to real-world contexts over indirect reports.
- Identify the best method: You need real-time parent–child interaction behaviors in the home.
- Naturalistic observation. Unobtrusive observation in natural settings captures authentic interactions without self-report biases or artificial influences.
- What is acquiescence bias in survey responding?
- Tendency to agree with items regardless of content. Some respondents habitually agree (yea-saying) or disagree (nay-saying) with statements, introducing systematic error unrelated to true opinions.
- What is observer drift in observational research?
- Gradual change in observers' coding criteria over time. Prolonged observation can lead to unintentional shifts in how criteria are applied, reducing consistency and reliability of behavioral coding.
- What is a key weakness of longitudinal surveys that threatens interpretation of change?
- Attrition bias due to differential dropout over time. Selective loss of participants with certain traits can distort longitudinal findings, as remaining samples may not represent the original group.
- What is a key strength of archival data methods compared with primary data collection?
- Low cost and access to large existing datasets or records. Utilizing pre-existing records minimizes new data collection efforts, enabling analysis of extensive historical or large-scale information affordably.
- Which procedure most directly reduces expectancy bias in observational studies?
- Blind observers to study hypotheses and participant condition. Masking key study details prevents observers' preconceptions from influencing coding, thereby enhancing objectivity and validity.
- Identify the best method: You need attitudes from many people quickly and anonymously.
- Survey method. Surveys facilitate anonymous, rapid collection of attitudinal data from broad samples, prioritizing efficiency and respondent privacy.
- Which observational sampling records whether a behavior occurs within fixed intervals?
- Time sampling (interval recording). Dividing observation into intervals and noting presence or absence of behaviors allows efficient capture of patterns without continuous recording.
- Identify the best method: You need decade-long trends in suicide rates using existing records.
- Archival data method. Existing records provide cost-effective access to long-term data for trend analysis, avoiding the need for new prospective collection.
- What is a major weakness of observational methods related to participant awareness?
- Reactivity (Hawthorne effect) alters behavior when observed. Awareness of being watched can cause participants to change behaviors, reducing the naturalness and validity of observed data.
- What is a primary weakness of survey methods that threatens validity of conclusions?
- Self-report biases (e.g., social desirability, recall error). Respondents may distort answers due to influences like desiring social approval or inaccurate memory, compromising the accuracy of self-reported data.
- Which survey design best supports assessing change within the same individuals over time?
- Longitudinal (panel) survey. Repeated measures on the same sample allow detection of individual-level changes and trends over time, supporting causal inferences about development.
- What is the primary advantage of structured observation over unstructured observation?
- Greater standardization and improved reliability across observers. Predefined categories and protocols ensure consistent data collection, minimizing variability and enhancing comparability across different observers.
- What is expectancy bias (observer bias) in observational coding?
- Coding is influenced by the observer's expectations or hypotheses. Prior knowledge or beliefs can unconsciously affect how observers interpret and record behaviors, introducing systematic error into data.
- What is the primary advantage of naturalistic observation over laboratory observation?
- Greater ecological validity and more typical behavior. Conducting observations in real-life environments captures authentic behaviors without artificial lab influences, improving generalizability.
- Which survey design best supports estimating prevalence at a single point in time?
- Cross-sectional survey. This design captures a snapshot of variables across a population at one time, ideal for prevalence estimates without tracking changes.
- What is a leading question in a survey item?
- A question worded to steer respondents toward an answer. Biased phrasing suggests a preferred response, influencing answers and reducing the objectivity of data collected.
- What is a common threat to validity in archival studies using administrative records?
- Misclassification due to inconsistent or inaccurate record coding. Errors or variations in how data were originally recorded can lead to incorrect categorizations, undermining the accuracy of archival analyses.
- What is a primary strength of survey methods for data collection in psychological research?
- Efficiently collects self-report data from large samples. Surveys enable quick, cost-effective gathering of subjective data like attitudes or beliefs from diverse, large populations without direct researcher involvement.
- Which type of bias occurs when survey nonresponders differ systematically from responders?
- Nonresponse bias. If nonresponders have different characteristics or views than responders, the sample becomes unrepresentative, biasing overall survey results.
- What is a key weakness of archival data when interpreting associations?
- Limited control over measurement and confounding variables. Researchers cannot manipulate variables or ensure quality in original data, complicating causal interpretations due to unmeasured confounds.
- What is interrater reliability in observational measurement?
- Degree of agreement among independent observers' ratings. Consistency in ratings among multiple observers indicates reliable measurement, reducing error from subjective interpretations in behavioral data.