Research Methods 2

A testable prediction is called (a/an):

• operational definition
• theory
• replication
• hypothesis

It is important for researchers to use precise operational definitions when...

• They want to ensure that conditions are assigned randomly

• They want to be able to replicate the experiment

• They want to organize the hypothesis appropriately

• They are conducting experimental research but not correlational research

• They are conducting an experiment with no independent and dependent variables

Research particpants are randomly assigned to one of three groups. One group listens to a list of words, another group reads a list of words, and the third group hears and reads the words. The researcher then tests the participants' memories to see how many words the members of each group can recall. The way the words are presented is which type of variable?

• Confounding

• Dependent

• Independent

• Extraneous

• Control

A teacher finds the distribution of scores on a final exam to be positively skewed with low variability. On the basis of this information, the teacher would be most justified in concluding that...

• A small number of students in the class did poorly on the exam

• The students in her class have a very wide range of intellectual abilities

• The exam was too difficult

• The exam is not a reliable assessment tool

• Most of her students are of above average ability

each time a study is repeated, the results are consistent.

• validity
• reliability
• sample

Factors that cause differences between the experimental group and control group other than the independent variable. 

• control group
• population
• confounding variables

The factor the researcher manipulates in a controlled experiment

• dependent variable
• independent variable
• confounding variable

The extent to which an instrument measure what it is supposed to measure.

• reliability
• validity
• standardized

The behavior or mental process that is measured in an experiment (the effect)

• dependent variable
• independent variable
• random sample

Repeating a research study, using different participants to see if findings extended to other people and situations is known as what

• Random assignment

• Operational definition

• Replication

• Control group