Lesson 9 data collection 2013

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Lesson 9 data collection 2013

  1. 1. Lesson 9: Data CollectionSunday, 31 March 13
  2. 2. Lesson 8: Dementia and Alzheimers Disease EXAM QUESTION Explain what is found in the brains of Alzheimer’s patients post-mortem. (4 marks)Sunday, 31 March 13
  3. 3. Lesson 8: Dementia and Alzheimers Disease EXAM QUESTION Explain what is found in the brains of Alzheimer’s patients post-mortem. (4 marks) • Show high levels of the protein Amyloid which highly toxic – causes cell death and causes the development of the plaques and tangles (2 marks) • Brains also have a massive lack of acetylcholine (an important neurotransmitter) (2 marks)Sunday, 31 March 13
  4. 4. Lesson 9: 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 and interviewsSunday, 31 March 13
  5. 5. Types of Data Scales of Measurement Qualitative Quantitative Nominal Subjective Ordinal Objective Interval Ratio Data Collection Techniques Case Studies Interview Questionnaires Psychological Tests Technology Cross-Sectional LongitudinalSunday, 31 March 13
  6. 6. Types of DataSunday, 31 March 13
  7. 7. Qualitative: descriptions of characteristics Quantitative: refers to measurements Subjective: based on opinions Objective: based on identifiable external criterionSunday, 31 March 13
  8. 8. Sunday, 31 March 13
  9. 9. What type of data was collected?? Qualitative or Quantitative? Objective or Subjective?Sunday, 31 March 13
  10. 10. Scales of MeasurementSunday, 31 March 13
  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!Sunday, 31 March 13
  12. 12. What scale are each of the following measured? Lenght of Desk? temperature? eye colour? height of people in room?Sunday, 31 March 13
  13. 13. TechniquesSunday, 31 March 13
  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 timeSunday, 31 March 13
  15. 15. Provide an example of each Ask around roomSunday, 31 March 13

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