Practical Research 2 Reviewer: Understanding Data and Research Design
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Questions and Answers

What does construct validity refer to?

  • The extent to which the instrument measures the theoretical construct it is intended to measure (correct)
  • The extent to which the instrument can predict or explain outcomes
  • The consistency of the instrument in measuring the same construct over time
  • The process of summarizing gathered information in research

    • How can construct validity be established?

  • Through test-retest reliability
  • By comparing the instrument to existing measures (correct)
  • By using inter-rater reliability methods
  • Through correlational analysis

    • What does criterion validity refer to?

  • The extent to which the instrument can predict or explain outcomes (correct)
  • The process of summarizing gathered information in research
  • The extent to which the instrument measures the theoretical construct it is intended to measure
  • The consistency of the instrument in measuring the same construct over time

    • How can reliability be established?

    <p>By using test-retest reliability methods</p> Signup and view all the answers

    What is the importance of statistical tests in science research?

    <p>To evaluate hypotheses and draw conclusions based on evidence</p> Signup and view all the answers

    What is the purpose of correlational research?

    <p>To clarify the relationship between variables and predict the magnitude of the association</p> Signup and view all the answers

    What is the advantage of sampling according to Brown (2006)?

    <p>Significantly saves the cost of research</p> Signup and view all the answers

    What is the main aim of quasi-experimental (Causal Comparative) research?

    <p>To measure the causal relationship between variables</p> Signup and view all the answers

    What is the main purpose of establishing validity and reliability in research instruments?

    <p>To ensure that the instrument measures what it is supposed to measure and that the results are accurate and reliable</p> Signup and view all the answers

    What type of research attempts to affect a certain variable by directly manipulating the independent variable?

    <p>Experimental (True Experimental Design) research</p> Signup and view all the answers

    Study Notes

    Research Concepts

    • Construct validity refers to the extent to which a research instrument measures the concept or characteristic it is supposed to measure.

    Establishing Construct Validity

    • Establishing construct validity involves ensuring that the research instrument measures the underlying theoretical construct or concept.

    Criterion Validity

    • Criterion validity refers to how well a research instrument predicts a specific outcome or criterion.

    Establishing Reliability

    • Reliability can be established by ensuring consistency in the research instrument's measurements and results over time and across different researchers.

    Importance of Statistical Tests

    • Statistical tests are crucial in science research as they help to identify patterns, relationships, and correlations between variables, and enable researchers to draw conclusions and make predictions.

    Correlational Research

    • The purpose of correlational research is to identify relationships and correlations between variables, without manipulating the variables.

    Sampling Advantage (Brown, 2006)

    • According to Brown (2006), the advantage of sampling is that it allows researchers to generalize findings to the larger population, while reducing time and resources required for data collection.

    Quasi-Experimental (Causal Comparative) Research

    • The main aim of quasi-experimental research is to identify cause-and-effect relationships between variables, without manipulating the independent variable.

    Establishing Validity and Reliability

    • The main purpose of establishing validity and reliability in research instruments is to ensure that the instruments measure what they claim to measure, and produce consistent results.

    Experimental Research

    • Experimental research attempts to affect a certain variable by directly manipulating the independent variable, allowing researchers to establish cause-and-effect relationships.

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    Description

    Prepare for your Practical Research 2 assessment by reviewing the understanding of data, ways to systematically collect data, and research design. This includes types of quantitative research such as descriptive and correlational studies.

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