2.1a: Research methods

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Description and Tags

78 Terms

1

Non-directional

A hypothesis which states that there is a difference but not what the difference will be.

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Directional

A hypothesis which states the direction of the difference or relationship.

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3

Null

A hypothesis which states the study will find no difference between IV and DV.

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4

IV

The variable of the study/experiment which is changed.

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5

DV

The variable which is measured.

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6

Pilot

A small study carried out before the bigger study.

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7

Confederate

A person who participates in a study, but is not measured.

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8

Extraneous

In an experiment, a variable other than the IV that might cause unwanted changes in the DV. Effects all participants, such as lighting.

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9

Confounding

A variable other than the IV that causes changes to the DV; usually found after a study.

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10

Situational

Variables where environmental factors may cause issues with participants.

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11

Standardised procedures

A set of procedures that are the same for all participants in order to combat situational variables.

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12

Experimenter

Variables where the presence of the experimenter may cause problems with participants, such as their gender, age, race or accent.

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13

Double-blind

A technique where the person conducting the experiment doesn't know the aims, same as the participants.

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14

Participant

A variable where characteristics such as age, gender, and intelligence that vary from one individual to another and may affect the results.

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15

Matched pairs

An experimental design where subjects are first matched by a characteristic and then assigned into different groups.

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16

Repeated measures

An experimental design where the same participants are used in all the conditions in an experiment.

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17

Demand characteristics

Cues in an experiment that tell the participant what behavior is expected.

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18

Target population

The total group to be studied or described and from whom samples may be drawn.

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19

Generalisable

The results from the sample can be applied to the target population.

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20

Random

A method of sampling that gives each person in a group the same chance of being selected.

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21

Systematic

A method of sampling where every nth item in the target population is selected.

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22

Opportunity

A method of sampling where anyone who can be asked is asked.

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23

Volunteer

A method of sampling where participants are invited to take part.

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24

Stratified

A sampling method that is variation of random sampling; the population is divided into subgroups and weighted based on demographic characteristics of the national population.

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25

WEIRD

Western, Educated, Industrialized, Rich and Democratic.

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26

Snowball

A method of sampling that recruits via referrals from one participant to others.

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27

Reliability

Ability of a test to yield very similar scores for the same individual over repeated testings.

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28

Internal validity

Extent to which the IV effects DV; with no issues from EVs.

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29

External validity

Extent to which we can generalize findings across populations, areas and times.

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30

Mundane realism

The extent to which an experiment is similar to real-life situations.

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31

Control

How consistent the study remains over IV changes; participants, environment, etc.

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32

Primary

Data that is collected firsthand by the researcher and are specifically designed. They can be lengthy or expensive, but have total control.

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Secondary

Data that is collected from already available research, so struggles to fit the needs of research. Quick and easy.

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34

Quantitative

Data that is numerical, and can be divided into different forms.

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35

Qualitative

Data that is word based, such as interviews and articles.

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36

Nominal

Data is organised into named categories, such as 'yes' and 'no'. Measures frequencies, lowest level of measurement.

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37

Ordinal

Ranked data, such as a happiness scale. Middle level of measurement.

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38

Outlying data

Anomalous data, skews the data and increases standard deviation.

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39

Central tendency

Measures that calculate an average; mean, mode and median.

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40

Dispersion

Measures that show how representative the mean is; range and standard deviation.

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41

Standard deviation

Sum that quantifies the amount of dispersion of the values in a data set; shows how accurate the mean is.

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42

Interval

Data that uses numerical measurements with equal distances between them. Highest level of measurement, can go into negatives.

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43

Ratio

Data that uses numerical measurements with equal distances between them. Highest level of measurement, cannot go into negatives.

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44

Correlational

Studies that aim to show a correlation.

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45

Correlation coefficient

A scale from 1- - 1 that rates the strength of the correlation.

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46

Case study

A non-experimental method that entails an in-depth examination of a person, institution or community using many different investigation methods.

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47

Co-variables

Replacement for IV and DV in non-experimental studies.

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48

Longitudinal

Studies that take place over a long period of time, often case studies.

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49

Attrition

People dropping out a study for various reasons.

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50

Cohort

Type of effects where generational experiences make the study un-generalisable across generations.

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51

Self report

Techniques where a person describes their own opinions and emotions.

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52

Questionnaire

Written questions with written answers.

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53

Interview

Verbal questions with verbal answers.

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54

Closed

Questionnaire questions with set answers to be selected from.

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55

Unstructured

An interview that allows for unplanned questions, which can have a small set list or be completely random.

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56

Validity

Whether the observed effect is genuine, whether it measures what it's supposed to and can be generalised.

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57

Order

Effects where participant fatigue or boredom due to repeating a study, occurs during a repeated measures design.

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58

Counterbalancing

How to overcome order effects, using and AB or BA method, or the ABBA method.

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59

ABBA

Type of counterbalancing where participants complete all conditions twice.

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60

AB

Type of counterconditioning where groups are split into two, with one doing condition A first and then B, and the other doing the reverse.

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61

Social desirability

Bias that causes participants to give a more socially acceptable answer.

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62

Lab

Experiments that occur in a controlled environment.

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63

Field

Experiments that occur in natural environments.

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64

Online

Research that occurs via the internet.

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65

Quasi

Experiments where the IV is not manipulated for ethical or plausibility reasons.

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66

Content analysis

Analysis of already existing content, such as advertisements and books.

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67

Behavioural categories

Breaks down content into quantitative data, done in quantitative analysis.

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68

Cross-sectional

Non-experimental studies that compare two or more groups of people with a difference, such as young and old people.

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69

Debrief

An interview after a study/experiment to check a person’s welfare and allow a person to withdraw their data.

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70

Presumptive

Consent that is assumed from asking a similar group.

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71

Retrospective

Consent given after a study.

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72

Observation

A type of non-experimental research where behaviour is observed.

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73

Event sampling

Type of observation where the frequency of behaviours within one time frame is counted.

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74

Time sampling

Type of observation where the frequency of behaviours across multiple time frames is counted.

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75

Overt

Type of observation where the participants have given informed consent to be observed.

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76

Covert

Type of observation where the participants are observed in secret.

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77

Intervening

The third variable in correlation studies that may have caused the correlations.

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78

Confounding

Type of variable that affects individual participants, such as mood.

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