## What is a correlated group design?

correlated-groups design. an experimental design in which the subjects in the experimental and control groups are related in some way. within-subjects design. a type of correlated-groups design in which the same subjects are used in each condition. order effects.

## What are the advantages of correlated groups designs over independent groups designs?

However, the primary advantage of the correlated samples designs is the reduction of random error due to individual differences. Recall that random error creates “noise” that makes it more difficult to detect systematic effects of the independent variable.

**Which of the following is a drawback of a between group design?**

The main disadvantage with between-group designs is that they can be complex and often require a large number of participants to generate any useful and reliable data. Another major concern for between-group designs is bias.

### What are the advantages and disadvantages of repeated measures design?

Repeated measures

Repeated measures | |

Advantages No participant variables fewer participants required than when using other designs | Disadvantages Order effects- boredom, fatigue, practice Demand characteristics more likely Different tests and materials may be required for each condition |

Evaluation |

### Which of the following is a type of correlated groups design?

You should remember from Chapter 9 that there are two types of correlated-groups designs: a within- subjects design and a matched-subjects designs. The same statistical analyses are used for both designs.

**What is at test for correlated groups?**

A paired t-test (also known as a dependent or correlated t-test) is a statistical test that compares the averages/means and standard deviations of two related groups to determine if there is a significant difference between the two groups.

#### Is matched pairs a related design?

Matched pairs design is an experimental design where pairs of participants are matched in terms of key variables, such as age and IQ. One member of each pair is then placed into the experimental group and the other member into the control group.

#### What is one major disadvantage of a mixed design?

One of the main disadvantages of this design is that when you quantitize qualitative data it loses its flexibility and depth, which is one of the main advantages of qualitative research.

**What is a disadvantage of a within subject experimental design?**

A major drawback of using a within-subject design is that the sheer act of having participants take part in one condition can impact the performance or behavior on all other conditions, a problem known as a carryover effect.

## What is the advantage of repeated measures vs between groups designs?

Summary: In user research, between-groups designs reduce learning effects; repeated-measures designs require fewer participants and minimize the random noise.

## What is internal validity?

Internal validity is the extent to which a study establishes a trustworthy cause-and-effect relationship between a treatment and an outcome. In short, you can only be confident that your study is internally valid if you can rule out alternative explanations for your findings.

**What is the difference between correlational and experimental research design?**

You’ll need to use an appropriate research design to distinguish between correlational and causal relationships. Correlational research designs can only demonstrate correlational links between variables, while experimental designs can test causation. What can proofreading do for your paper?

### What are the advantages and disadvantages of matched pairs design?

The primary advantage of the matched pairs design is to use experimental control to reduce one or more sources of error between the groups. One limitation of thisdesign can be the availability of participants. At times, there may not be a suitable match for a participant.

### How to calculate the DF for the correlated t-test?

The df for the correlated t-test is calculated as: df = n – 1 where n represents the number of pairs across the two sets of scores. 6. Computational Formula for Paired-samples t-test

**What are confounding variables in a correlational study?**

Confounding variables can make it seem as though a correlational relationship is causal when it isn’t. In your study on violent video games and aggression, parental attention is a confounding variable that could influence how much children use violent video games and their behavioral tendencies.