Validity And Experiments Flashcards
What’s standardisation
Where procedures are kept the same In all experiments
What’s randomisation
Where the allocation of conditions is random
Investigator affects
Where the experimenter may unconsciously influence the results
Confounding variable
Factors other than the IV that may cause a result
Extraneous variables
Unwanted variables
Participant variable
How individual characteristics affect results
Situational variable
Unintentional factors such as smell sound temperature
Demand characteristics
Where the participant alters behaviour to what they think the experimenter wants
What does DIRPCP stand for in ethics
Deception
Informed consent
Right to withdraw
Protection from harm
Confidentiality
Privacy
What’s a pilot study
Small trial run of the actual investigation
Why r pilot studies useful
To check it:
Makes sense
Checks for confounding variables
Relevance to hypothesis
What’s an open questionnaire
No fixed answer
Qualitative data
What’s a closed questionnaire
Gives quantitative data
Fixed answers
What’s the sign test an eg of
An inferential statistic
Name the 4 types of experiment
Quasi natural field lab
2 types of self report methods
Questionnaire
Interview
What are two types of observation
Cover overt
What are 3 types of experimental designs
Matched pairs
Independent groups
Random sampling
What are 4 types of sampling techniques
Random
Volunteer
Systematic
Opportunity
What are 4 ethical issues
RTW
consent
Debrief
Protection from harm
What are two measures of dispersion
Standard deviation
Range
What are 3 measures of central tendency
Mean median mode
What are two types of correlation
Positive negative
What are two types of graphs
Bar line
What are two types of hypothesis
Directional
Indirectional
