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Component 2 - T1 - Dealing with the EV (Researcher Effects- These EV occur…
Component 2 - T1 - Dealing with the EV
Researcher Effects
- These EV occur when the researcher unintentionally on unconsciously influences the outcome of any research they are conducting.
Deal with EV?
Double Blind Study
Examples
Physical Characteristics
Bias in interpretation of data
Non-Verbal communication
Order Effects
- refers to the difference in the responses of ppts that result from the order (e.g. 1st, 2nd, 3rd) In which the experimental materials are presented to them. Order effects can occur in any kind of research.
Deal with EV?
Counterbalances (alternating)
ABBA Design
Participant Variables
- These EV are related to Individual Characteristics of each ppt that may impact how he/she responds.
Deal with EV
Match ppts with background e.g matched pairs.
Repeated Measures Design
Examples
Mood
Individual Characteristics
Anxiety
Awarness
Background differences
Intelligence
Situational Variables
- These are factors in environment that can unintentionally affect the DV in the study.
Examples
Odours
Time of the day
Temperature
Lightning
Deal with EV?
Standardised procedures - ppts test under the same condition - environment controllled