Research Methods Flashcards
What is the experimental method?
Manipulation of an IV to measure the effect of the DV
What is an aim?
A general statement of what the researcher intends to investigate, the purpose of the study
What is a Hypothesis?
A clear, precise, testable statement that states the realtionship between the variables to be investigated
What are the 2 types of hypothesis?
- Directional hypothesis
- Non-directional hypothesis
What is a directional hypothesis?
States the direction of the difference or relationship
What is a non-directional hypothesis?
Does not state the direction of the difference of the difference or relationship
What are variables
Any ‘thing’ that can vary or change within an invesitgation
What is the IV?
(Independent Variable) The varible that’s changed
What is the DV?
(Dependent Variable) Variable that is measured by the researcher
What is Operationalisation?
Clearly defining variables in terms of how they can be measured
What are EV’s?
(Extraneous variable) Any variable, other than the IV, that may affect the DV
What are confounding variables?
A kind of EV that changes as the IV changes
What are demand characteristics?
Any cue from the researcher or from the research situation that may be interpreted by participants as revealing the purpose of an investiagtion which causes participants to change their behaviour
What are investigator effects?
Effects of the invesitgators behaviour on the DV
What is randomisation?
The use of chance methods to control for the effects of bias when designing materials and deciding the order of experimental conditions