Lesson5datacollection

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Lesson5datacollection

  1. 1. Lesson 5: Data CollectionFriday, 6 April 2012
  2. 2. Lesson 4: Reconstructing Memories EXAM QUESTION Taken from 2011 Mid Year ExamFriday, 6 April 2012
  3. 3. Model response:Friday, 6 April 2012
  4. 4. Lesson 5: Data Collection Objectives ~ Define descriptive statistics  ~ Define qualitative research ~ Define quantitative research ~ Distinguish between subject and objective data ~ Outline scales of measurement  ~ Describe the techniques of qualitative and quantitative data collection: case studies; observational studies; self- reports; questionnaires; interviews; brain imaging and recording technologies ~ Describe the different types of test reliability and validityFriday, 6 April 2012
  5. 5. Types of Data Scales of Measurement Qualitative Quantitative Nominal Subjective Ordinal Objective Interval Ratio Data Collection Techniques Case Studies Quality Interview Validity Questionnaires Psychological Tests Technology Reliability Internal External Cross-Sectional Internal Longitudinal Content Inter-rater Parallel forms Criterion-related Test-retest Construct GeneralisationFriday, 6 April 2012
  6. 6. Types of DataFriday, 6 April 2012
  7. 7. Qualitative: descriptions of characteristics Quantitative: refers to measurements Subjective: based on opinions Objective: based on identifiable external criterionFriday, 6 April 2012
  8. 8. Friday, 6 April 2012
  9. 9. What type of data was collected?? Qualitative or Quantitative? Objective or Subjective?Friday, 6 April 2012
  10. 10. Scales of MeasurementFriday, 6 April 2012
  11. 11. Nominal: property with no quantitative value, e.g. hair colour Ordinal: definite sequence though inconsistent gaps, e.g. age of class Interval: scaled measure with constant values between each level *note no value of zero* Ratio: most precise, basically an interval scale but with zero meaning zero!Friday, 6 April 2012
  12. 12. What scale are each of the following measured? Psych Study Score? temperature? eye colour? height of people in room?Friday, 6 April 2012
  13. 13. TechniquesFriday, 6 April 2012
  14. 14. Case Studies: detailed observations of an individual over a period of time Observation: Naturalistic - observing voluntary behaviours in natural environment Controlled - observing voluntary behaviours in structured environment Questionnaires: collecting written responses from participants Psychological Tests: personality or multiple choice Technology: Brain-imaging Cross-Sectional: participant data across different ages and groups compared Longitudinal: same participant over a long period of timeFriday, 6 April 2012
  15. 15. Provide an example of each Ask around roomFriday, 6 April 2012
  16. 16. QualityFriday, 6 April 2012
  17. 17. Reliability Validity Internal - extent to which Internal - measures what it each aspect equally claims to measure contribute to final score - content (face): appears to be valid Inter-rater - same result - construct: applied to obtained regardless of theory administrator Test-retest - same External - can results be participant, same results generalised? second time -criterion related: support from other research Parallel form - pre - characteristics of experiment and post test enable generalisationFriday, 6 April 2012

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