Midterm Exam, Fall 2013
Dorelys Gordillo
1- Why do we test: We use a test to measure an outcome and make sense of a judgment. A test in general is defined as a measuring device or procedure. a-What do we test: Tests used today come in a variety of forms and are used to measure a wide range of areas. E.g: Achievement Tests, its use to assess an individual’s level of knowledge in a particular domain. (example: Early School assessment).
E.g: Aptitude Test: Measures an individual’s potential to succeed in an activity requiring a particular skill or set of skills. (example: Differential aptitude test).
E.g: Personality Test: Assess an individual’s unique & stable set of characteristics, traits and attitudes. (example: Inventory of positive thinking traits).
2- Define:
Dependent variable: it is what you measure in an experiment and what its affected during the experiment. It responds to the independent variable.
Independent variable: It is the variable you have control over in your experiment. The variable that it is manipulated by the researcher.
Example: In sociology, in measuring the effect of education on income or wealth, the dependent variable is level of income/wealth and the independent variable is the education level of the individual.
3- Define:
Reliability: It means whether a test or measuring tool used, measures something consistently. Also, the extent to which measurement differ from occasion to occasion as a function of measurement error.
Note: error is the difference between one’s observed score and one’s theoretical true score. Goal is to reduce sources of error so as to increase reliability.
(Example of reliability: test –retest reliability (used when you want to examine if a test is reliable over time), Internal consistency reliability (used when you want to know if the items on a test assess one, and only one, dimension), Parallel forms reliability (when you want to know if