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Flashcards in experiment methods Deck (5)
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1

What are the 4 types of variables.

IV-independent variable, the one the researcher manipulates.

DV- the dependent variable which is the one being measured.

EV- extraneous variables which are variable other then the IV that could affect the DV.

CV- confounding variables are variables other then the IV that have affected the DV.

2

What are the different types of experiments?

Laboratory experiments- they are carried out in a controlled environment eliminating EV and fully controlling the IV. Participants are often randomly allocated a condition removing bias, this allows for changes in the DV to be measured when caused by the IV.

Field experiment- carried out in the real world where the IV id manipulated and the effect on the DV is measured.

Natural experiments- you take advantage of naturally occurring IV and see its affect on DV.

Quasi experiments are when a naturally occurring IV which is the differences between people such as age and see the effect on DV often used in situations when manipulating the IV is unethical.

3

type of experiments evaluation, lab

Lab experiments-
+)easier to control EV and stop them from becoming CV
+) Cause and effect for IV to DV is easy to establish.
+) they can usually be replicated easily so they can be checked for reliability.

-)Demand characteristics may occur
-)Situation lacks mundane realism and ecological validity

4

type of experiments evaluation, field

+) More mundane realism and ecological validity.
+)You can still establish cause and effect between IV and DV.
+)less demand characteristics.

-)less control over EV and so the research may be less valid.
-) less control over who is taking part is the experiment (the sample)
-)They may be difficult to replicate.

5

type of experiments evaluation, natural

+) High levels of mundane realism and ecological validity
+)very useful when it is unethical to manipulate IV or the sample

-)Less control over EV, difficult to replicate.
-) difficult to determine cause and effect.