Experimental Design Tutorial: Quick Reference Guide



Experimental Design Tutorial Quick Reference Guide




This quick reference guide outlines some of the key experimental design concepts that you need to be aware of during your time as a psychology student. The guide is designed to used in conjunction with an easy to follow experimental design tutorial which you can access via the following link.


Experimental Design Tutorial



EXPERIMENTAL HYPOTHESIS (H1)

The prediction of the outcome of the experiment


ONE-TAILED EXPERIMENTAL HYPOTHESIS

Predicts the way that behavior will change


TWO-TAILED EXPERIMENTAL HYPOTHESIS

Simply states that the behavior will change


NULL HYPOTHESIS (H0)

Simply states that any observed differences between groups were down to chance.


INDEPENDENT VARIABLE (IV)

The one factor that is different between the conditions


DEPENDENT VARIABLE (DV)

The aspect of behavior that is measured


EXTRANEOUS VARIABLE

Anything, other than the IV that might have had an effect on the result of the experiment.


CONFOUNDING VARIABLE

An extraneous variable that does effect the result of the experiment. In doing so, it becomes impossible to say whether any difference found was due to the IV or the confounding variable.


INDEPENDENT SUBJECTS DESIGN

Some subjects perform in experimental condition and others in control condition.


REPEATED MEASURES DESIGN

All subjects perform in both experimental condition and control condition


MATCHED PAIRS DESIGN

As a result of a pre-test subjects are sorted into pairs. One of the pair performs in the experimental condition and the other performs in the control.


ORDER EFFECTS

If a participant has to perform a series of actions, the order in which she/he performs them will have an effect on the efficiency of each action. The two main order effects are practice (increases efficiency) and fatigue (decreases efficiency).


COUNTERBALANCING

Employed to ensure that order effects have an equal effect by alternating the conditions.




Recent Articles

  1. Neuropsychology

    Jul 18, 19 09:37 AM

    Neuropsychology information and resources. Learn all about the fascinating branch of psychology which explores the relationships between the brain and behavior.

    Read More

  2. Types of Psychology: Comprehensive Information and Resources

    Jul 18, 19 09:30 AM

    Quality information about all the different types of psychology out there.

    Read More

  3. Aaron T. Beck: Today in the History of Psychology (18th July 1921)

    Jul 18, 19 08:00 AM




    Dr. Aaron T. Beck was born. A world renowned pioneer of cognitive therapy (CT) Dr. Beck's prolific body of work consisting of over 600 articles and 25 books has profoundly influenced our understanding…

    Read More


New! Comments

Have your say about what you just read! Leave me a comment in the box below.





Back To The Top Of The Page


Go To The Experimental Design Tutorial Page


Go To The Home Page