1. Lesson 9: Data Collection
Sunday, 31 March 13

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. 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. 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 interviews
Sunday, 31 March 13

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
Longitudinal
Sunday, 31 March 13

6. Types of Data
Sunday, 31 March 13

7. Qualitative: descriptions of characteristics
Quantitative: refers to measurements
Subjective: based on opinions
Objective: based on identifiable external criterion
Sunday, 31 March 13

8. Sunday, 31 March 13

9. What type of data was collected??
Qualitative or Quantitative?
Objective or Subjective?
Sunday, 31 March 13

10. Scales of Measurement
Sunday, 31 March 13

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. What scale are each of the following measured?
Lenght of Desk?
temperature?
eye colour?
height of people
in room?
Sunday, 31 March 13

13. Techniques
Sunday, 31 March 13

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 time
Sunday, 31 March 13

15. Provide an example of each
Ask around room
Sunday, 31 March 13