Experimental Research

Which of these is NOT the key characteristic of experimental research?

• Manipulation

• Observation

• Randomization

Which of these is TRUE about True Experimental Design?

• It does not involve a control group.

• It avoids manipulation of variables.

• It randomly assigns participants to groups.

A pre-test/post-test design is useful for:

• Comparing groups without any intervention

• Measuring the effect of an intervention over time

• Observing participants without any manipulation

Which ONE of these designs combines pre-test/post-test and post-test only designs?

• Solomon Four-Group Design

• Time Series Design

• Matched-Pairs Design

Which of the following is a common method of sampling in experimental research?

• Purposive sampling

• Random sampling

• Snowball sampling

What is an advantage of the within-subjects design?

• Requires fewer participants

• No risk of carryover effects

• No need for a control group

One disadvantage of a post-test only design is:

• Risk of pre-test bias

• No baseline for comparison

• Requires a large number of participants

• Harder to control external factors

Which of the following helps reduce selection bias in experimental research?

• Using different test versions

• Matching participants based on traits

• Random assignment of participants to groups

In matched-pairs design, participants are:

• Randomly assigned to groups without considering traits

• Paired based on similar traits, then assigned to groups

• Assigned to groups based on convenience

A researcher is conducting a study to determine whether using interactive educational apps improves students' reading comprehension in a primary school. The study involves two groups: one group uses the apps during lessons, and the other group follows traditional teaching methods.

What is the independent variable in this study?

• Students' reading comprehension

• Primary school students

• Use of interactive educational apps

• Traditional teaching methods