AS Psychology: Research Methods Keywords

Descripción

Definitions; pros and cons
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Pregunta Respuesta
Lab Experiment PROS: I.V Manipulated; High Control of E.V's; Easy to Replicate; Can conclude Cause & Effect CONS: Eco-validity issues; Higher chance of Demand Characteristics; Artificial Setting/Situation
Field Experiment PROS: I.V controlled only; Higher eco-validity; Can conclude cause & effect; Reduced demand characteristics; CONS: More time consuming
Natural Experiment PROS: No manipulation; High eco-validity; Useful for studying the unethical CONS: Quasi-experiment; Can't conclude cause and effect.
Questionnaires (List of Q's; Highly Structured; Written) PROS: Open & Closed Q's; Cheap way to collect data; Easy to analyse (closed Q's); Can be anonymous (confidentiality) CONS: Sometimes Q's are ambiguous; Data not as rich (closed Q's); Social Desirability Bias
Interviews ('Spoken Questionnaire'; Structured, Semi-Structured and Unstructured Interviews) PROS: Large amount of rich data; Semi-Structured interviews allow flexibility CONS: Cost of training interviewer; Time-consuming; Hard to replicate (unstructured/semi-structured); Social Desirability Bias
Aim General Statement about investigation; reasonably precise E.g - to see if age affects the duration of the Short Term Memory.
Hypothesis Testable, predictive statement tested to see if true; either a predicted difference or relationship between variables.
Hypotheses Directional/ One-tailed: States direction of predicted statement Non-Directional/ Two-tailed: States difference between conditions; doesn't specify direction.
Repeated Measures: Same PP's used in both conditions (Y) - Participant Variables eliminated; fewer participants used (N) - Order effects (fatigue, boredom); Can't use same resources/materials
Independent Groups (Different group for each condition) (Y) - No order effects; Same stimuli used; Reduced demand characteristics (N) - More participants needed; Can't control participant variables.
Matched Pairs (PP's closely matched and put in separate groups) (Y) - No order effects; Good for controlling participant variables. (N) - Difficult to find exact match; More participants needed.
Types of Sampling Opportunity: Whoever you can get (family and friends) Volunteer: Volunteers (people interested in study) Random: Arbitrary selection of people (names out of hat)
Naturalistic Observation (Y) - No manipulation; High eco-validity (N) - No control of E.V; Ethical issues (consent, right to withdraw)
Controlled Observation (Y) - High control of E.V (N) - Reduced validity (demand characteristics); Low eco-validity E.g - Ainsworth's Strange Situation
Validities Internal: Is your study measuring what it's meant to? External: How useful are your findings to more than one sample?
Observation Types Participant/Overt: Researcher takes part Non-participant/Covert: Participants are unaware they're being studied
Demand Characteristics Participants change behaviour due to study/experiment 1) Social Desirability Bias: Changing responses to appear more socially appealing 2) Screw You Effect: Changing responses to affect validity of experiment
Investigator Effects Whatever the investigator might do that could influence results. e.g. - using a specific tone of voice Controlled through 'double blind technique'
Ethical Issues TOP 3 Ethical Issues or 'DIP' 1) Deception (solved through debriefing) 2) Informed Consent (solved by attaining consent) 3) Protection of Participants (solved through right to withdraw)
Pilot Study Small scale study conducted to identify any design issues (Y) - Improves Internal Validity
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