Laboratory Exercise
LaboratoryExercise:
Selftest answers
1.Random experiment
2.Two group experimental design.
3.Control group design.
4.Internal validity.
5.Maturation.
6.Loading effect.
7.Colluding.
8.Single blind experiment.
9.Cognitive effect.
10.External validity.
11.Conceptual Replication.
12.Independent variables
13.Experimental development design.
14.Placebo.
15.Single independent variable.
16. Factorial notation.
17.4, 6, 24
Multiplechoice self test

Independent, dependent.

Experimental group.

Control group, experimental group

Using the same subjects in each group, using different subjects in each group.

External validity.

History effect.

Regression to the mean increase

Subjects lost differentially from experimental and control group.

Double –blind experiment single blind experiment.

Floor

Conceptual

Regression to the mean

We have at least one significant interaction effect.

6

2*3

4

3*3

An interaction effect

Longitudinal.
Module12

Mozart effect

Independent variable

Maturation effect

Internal validity refers the degree to which one can infer that a causal relationship exists between two variables where as external validity refers to theThe extent to which the study results can be generalized to and across populations of persons, settings, times, outcomes, and treatment variations. Both of them are vital as they infer the relationship between the two variables.
REFERENCE
SherriL. J. (2010). Researchmethods A modular approach,Third Edition.
JacksonvileUniversity, U.S.A