Chapter 1 Definitions Flashcards Preview

Psychology Units 3+4 > Chapter 1 Definitions > Flashcards

Flashcards in Chapter 1 Definitions Deck (22):
1

Dependent Variable

The property that is measured in the research.

MEASURES THE EFFECT OF THE IV.

2

Extraneous Variable

Variable other than the IV that could cause undesirable changes to the DV.

3

Controlled Variable

When potential effects of the EV have been removed.

4

Confounding Variable

Variable other than the IV that has a systematic effect on the DV.

RESEARCH IS A WASTE OF TIME IF IT IS PRESENT.

5

Convenience sample.

Using any person 'conveniently' available as part of the sample - are essentially biased and unreliable.

6

Representative Sample

When the sample represent that population, so that the results/conclusions can be generalised to the wider population.

7

Random sampling

Sampling procedure in which each member of the population has an equal chance of being selected.

8

Stratified sampling

When the effects of a certain variable can be eliminated as a possible confound in an experiment.

9

Random allocation

When all participants in an experiment have an equal chance of being in the E/C-group.

10

Repeated measures

Each participant is in the E/C-group.

11

Matched participants

Attempts to eliminate confounding variables by "matching" participants in E and C-group based on key characteristics.

12

Independent groups

Allocates participant to E/C-group randomly.

13

Order effect

Type of confounding variable (Eg. Practice, fatigue, boredom etc.).

14

Placebo effect

When participants' behavior is influenced by their expectations of how they should behave (caused by a placebo).

15

Single-bling procedure

Participants don't know if they are in the E/C-group.

16

Experimenter effect

When the outcome of an experiment is unintentionally (or intentionally) affected by the experimenter.

17

Double-blind procedure

No one knows who is in E/C-group.

18

Descriptive statistics

Tell us about the "shape" of the data set.

NO CONCLUSIONS CAN BE DRAWN.

19

Inferential statistics

Statistical procedures that allow researchers to decide whether changes in the IV have cause changes in the value of the DV.

20

P-value.

Probability that the difference in results is due to chance.

21

List the participants' rights in research

Confidentiality
Voluntary participation
Withdrawal rights
Informed consent
Deception
Debriefing

22

Independent Variable

Variable that is deliberately manipulated or varied in some way by the experimenter.