Research Methods Flashcards
Representativeness heuristics
Involves judging a probability of an event by its superficial similarity to a prototype.
Heuristics
Mental shortcuts that help us to streamline our thinking and make sense of the world.
Base rate
How common a characteristic or behaviour is in the general population.
Availability heuristic
Involves estimating the likelihood of an occurrence based on the ease with which it comes to our minds.
Cognitive biases
Systematic errors in thinking
Hindsight bias
Tendency to overestimate how well we could have successfully forecasted known outcomes.
Overconfidence
Tendency to overestimate our ability to make correct predictions.
Naturalistic observation
Watching behaviour in real world settings
External validity
The extent to which we generalise findings to real world settings.
Internal validity
The extent to which we can draw cause and effect inferences from a study
Case study
Research design that examines one person or a small number of people in depth, often over a period of time.
Existence proofs
Demonstrations that a given psychological phenomenon can occur.
Correlational design
Research design that examines the extent to which two variables are associated.
Scatter plot
Grouping of points on a two-dimensional graph in which each dot represents a single persons data.
Illusory correlation
Perception of a statistical association between two variables where none exists.
Experiment
Research design characterised by random assignment of participants to conditions and manipulation of an independent variable
Random assignment
Randomly sorting participants into two groups
Experimental group
In an experiment, the group of participants that receives the manipulation
Control group
In an experiment, the group of participants that does not receive the manipulation
Independent variable
Variable that the experimenter manipulates
Dependent variable
Variable that an experimenter measures to see whether the manipulation has an effect
Confound
Any difference between the experimental and control groups other than the independent variable.
Placebo effect
Improvement resulting from the mere expectation of improvement
Meta-analysis
Investigation of the consistency of patterns of results across large numbers of studies conducted in different laboratories.