EXPERIMENT

Experiment



Experiment

1)

1. Experimental Stimulus

2. Instrumentation

3. Individual matching

4. Experimental group

5. Pre experimental designs

6. Selection biases

7. Post test-only control group design

2)

The existence of threats to internal validity suggests that the alleged causal link may be only apparent. This differs from the second meaning of "alternative interpretation", where A, manipulated, and B, which is measured, and in fact causally related, but there are doubts whether the operations are carried out with the empirical objects represented constructs A and B, which the researcher tried to use to refer to A and B. Most of the theoretical Controversial in psychology it is this kind - for example, Controversial about whether it is possible to explain the association between pay and performance over the fact that high wages creates a sense of inequality or breaks out, or "self-concept" etc. In these studies, it is not about internal validity, that is not about whether the change in payment for the change in performance. Rather, it is a question of how payment should be expressed in terms of relevant theory available generalization. The four types if internal validity threats identified in the case are as follows:

1. Change over time

A) Previously known side variable (time of day). You must try to keep this variable constant, hold it at a constant level.

B) Instability over time. Adverse factors never remain the same; the very presence in the situation of the experiment may cause a change in behavior. Random variation of NP (headphones during the experiment may be removed ® different degrees of noise, although it is formally withdrawn)

2. Difference between the experimental tasks.

3. Effects sequences.

4. Experimenter bias and Pygmalion effect.

3)

Stanford Prison Experiment

The prison system of America has proven to be ineffective. Despite all the cosmetic improvements made in recent years, the recidivism rate did not decrease below 75%. ...