Methodology Flashcards
Hindsight Bias
the tendancy for people to exaggerate, after knowing that something occurred, how much they could have predicted before it occurred.
What are the three types of research methods
- observational (description)
- correlational (prediction)
- experimental (causality)
Observational Method
The technique whereby a researcher observes people and systematically records measurements or impressions of their behavior
Ethnography
The method by which researchers attempt to understand a group or culture by observing it from the inside, without imposing any preconceived notions they might have.
Inter judge reliability
The level of agreement between two or more people who independently observe and code a set of data; by showing that two or more judges independently come up with the same observations, researchers ensure that the observations are not the subjective, distorted impressions of one individual.
Archival Analysis
A form of observational method in which the researcher examines the accumulated documents, or archives of a culture.
Correlational Method
The technique whereby two or more variables are systematically measured and the relationship between them is assessed
Correlation coefficient
A statistical technique that assesses how well you can predict one variable from another, for example, how well can you predict peoples weight from their height.
Surveys
Research in which a representative sample of people are asked questions about their attitudes and behavior.
Random selection
A way of ensuring that a sample is representative of a population by giving everyone in the population an equal chance of being selected for the sample.
Limits of the causational method
Correlation does not eual causation
Experimental method
the method in which the researcher randomly assigns participants to different conditions and ensures that these conditions are identical except for the independent variable
Independent variable
The variable a researcher changes or varies to see if it has an effect on some other variable.
Dependent Variable
The response that is hypothesized to depend on the independent variable. all participants are measured on this variable.
Random assignment to condition
A process ensuring that all participants have an equal chance of taking part in any condition of an experiment; through random assignment researcher can be relatively certain that differences in the participants personalities or backgrounds are distributed evenly across conditions
Probability level (p-value)
Number calculated with statistical techniques that tells researchers how likely it is that the results of their experiment occurred by chance and not because of the independent variable or variables. (the convention in science is to consider results significant if the probability level is less that 5 in 100 that the results might be due to chance factors and not the independent variables studied.
Internal validity
Making sure that nothing besides the independent variable can affect the dependent variable, this is accomplished by controlling all extraneous variables and by random assigning people to different experimental conditions.
External Validity
The extent to which the results of a study can be generalized to other situations and to other people
Psychological Realism
The extent to which the psychological process triggered in an experiment are similar to psychological processes that occur in everyday life.
Cover story
a description of the purpose of a study, given to participants, that is different from its true purpose and is used to maintain psychological realism
Field experiments
Experiments conducted in natural settings rather than in the laboratory
Basic Dilemma of the social psychologist
the trade of between internal and external validity in conducting research; it is very difficult to do one experiment that is both high in internal validity and generalizable to other situations and people.
Replications
repeating a study, often with different subject populations or in different settings
Meta-analysis
A statistical technique that averages the results of two or more studies to see if the effect of an independent variable is reliable.