Video and Multimedia

Watch and learn! Carefully selected videos will help bring key concepts and theories to life, preparing you for your studies and exams.

Click on the following links which will open in a new window.

Audio Links

 

Video Links

  • Internal Validity
    This video discusses nine threats to internal validity.

  • External Validity
    This video discusses threats to external validity.

  • Pre-Test and Post-Test Measures
    This video covers a variety of types of pre- and post-tests for measuring program outcomes, including written surveys/questionnaires as well as participatory methods. You will learn about ways to increase the validity of your pre- and post-test measures, how to use your program objectives to develop good survey questions, tips for effective question ordering, and the use of retrospective pre- and post-tests.

 

Web Exercises

  • Try out the process of randomization. Go to the Web site http://www.randomizer.org. Type numbers into the ran­domizer for an experiment with 2 groups and 20 individu­als per group. Repeat the process for an experiment with 4 groups and 10 individuals per group. Plot the numbers corresponding to each individual in each group. Does the distribution of numbers within each group truly seem to be random?

  • Participate in a social psychology experiment on the Web. Go to http://www.socialpsychology.org/expts.htm. Pick an exper­iment in which to participate and follow the instructions. After you finish, write up a description of the experiment and evaluate it using the criteria discussed in the chapter.