Psychological Research Methods and Statistics Flashcards Preview

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Flashcards in Psychological Research Methods and Statistics Deck (24):
1

The small group of participants, out of total number available, that a researcher studies

Sample

2

Research method in which the psychologist observed the subject in a natural setting without interfering

Naturalistic observation

3

Research involves one or more participants

Case study

4

Research method in which information is obtained by asking many individuals a mix set of questions

Survey

5

Research method in which data are collected about a group of participants over a number of years to assess how certain characteristics change or remain the same during development

Longitudinal study

6

Research method in which data are collected from groups of participants of different ages and compare so that conclusions can be drawn about differences due to age

Cross – sectional study

7

The measure of a relationship between two variables of sets of data

Correlation

8

An educated guess about the relationship between two variables

Hypothesis

9

Any factor that is capable of change

Variable

10

The group to which an independent variable is applied

Experimental group

11

The group that is created in the same way as the experimental group except that the experimental treatment the independent variable is not applied

Control group

12

A situation in which a researchers expectations influence that persons own behavior, and thereby influence the participants behavior

Self-fulfilling prophecy

13

An experiment in which the participants are unaware of which participants received the treatment

Single-blind experiment

14

An experiment in which neither the experimenter nor the participants know which participants received which treatment

Double-blind experiment

15

A change in a participants illness or behavior that results from a belief that the treatment will have an effect rather than from actual treatment

Placebo effect

16

The branch of mathematics concerned with summarizing and making meaningful inferences from collections of data

Statistics

17

The listing and summarizing of data on a practical, efficient way

Descriptive statics

18

An arrangement of data that indicates how often a particular score or observation occurs

Frequency distribution

19

A graph of frequency distribution shaped like a symmetrical,
bell-shaped curve; a graph of normally distributed data

Normal curves

20

A number that describes something about the "average" score of a distribution

Central tendency

21

A measure of difference, or spread of data

Variability

22

A measure of variability that describes an average distance of every score from the mean

Standard deviation

23

Describes the direction and strength of the relationship between the sets of variables

Correlation coefficient

24

Numerical methods used to determine whether research data support a hypothesis or whether results were due to chance

Inferential statistics