It happens occasionally that a student who is in one of our classes has previously taken the class from another instructor. The repeater students will comment that the class is so much easier with us as instructors.
Now, we might want to believe that we are such great instructors that student learning (the dependent variable) has drastically improved because of us (the independent variable). However, which threat to internal validity better explains the increase in student learning?
a. attrition
b. testing
c. diffusion of treatment
d. instrumentation
Question 2
PsycINFO and PsycARTICLES are both developed and maintained by APA.
Indicate whether the statement is true or false
The major classes of vertebrates
Classes of dinosaurs
The subculture that centers around tattooing previously existed on the fringes of society, with ...
Beta-lactam antibiotics: The beta-lactam ring is common to many different classes of antibiotics.
Student Test Scores versus GDP per Capita
Student opening present