# Questions tagged [counterbalancing]

A method of controlling for multiple extraneous effects by including all possible combinations within each treatment condition / arm of an experiment.

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### Power calculation for a three condition between-subject counterbalanced linear mixed model with an additional within-subject factor

Problem Hey, i need some help for power calculation for a three condition counterbalanced linear mixed model with an additional within-subject factor. This is an fictious example, which doesn't make a ...
• 11
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### Accounting for nuisance confounding variable in multi level model for crossed or multiple membership study

I am trying to use a multi level model for a study where participants take part in 3 separate sessions where they complete a cognitive task and I measure reaction time. During each session, they ...
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### What kind of statistical test do I use when controlling for order effects?

I have two conditions indoor and outdoor and I show one half of the participants first a picture of meat and then a picture of vegan food and the other half first a picture of vegan food and then a ...
46 views

### What type of data analysis should I carry out?

In my experiment I have two groups each with 30 participants (experimental group and a control group) The experimental group consists of autistic individuals and the control consists of neurotypical ...
• 21
441 views

### Defining test- and control groups for geo-test with balanced covariates and group size

I'm currently designing an A/B-Test on a geo level, where the test- and controlgroup will be made up of various (US) States. Each state has a few specific characteristics (e.g. mean income, ...
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1 vote
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### Within-Subjects or Between-Subjects MANOVA

I am designing an experiment to test drone pilot reaction time to obstacles introduced to the drone's flight path in a controlled setting. There is one IV with 3 levels, and 3 DV. IV is visual ...
7k views

### Repeated Measures Design but also testing order effects in SPSS

I am a psychology student using SPSS to analyse my data. I have 2 conditions of the IV of treatment (treatment or no treatment) to test pain tolerance levels which is measured by the DV of pulse rate ...
8k views

### Advantages of counterbalancing vs. randomizing stimuli

I'm designing an experiment, in which 40 participants answer 10 questions, 5 in condition $A$ and 5 in condition $B$, and I'm interested in the difference between the two conditions. It's not clear ...
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1 vote
2k views

### Calculate 'order effect'

My experiment has the following setup: Participant completes exercise A. Participant completes exercise B. A counterbalancing design was used to remove (reduce?) the effect of order on the results; ...
• 53
1 vote
50 views

### some suggestions for analyzing two-factor within subject design?

I'm doing a two-factor within-subject design experiment, and the two factors are all categorical variables. factor one has four categories, while factor two has two categories, and is counterbalanced. ...
• 11
1 vote
747 views

### Repeated Measures ANOVA pairing counterbalance issue

I have been conducting all of my analyses on one DV (Quality) using a repeated measures ANOVA, with two variable (Time and Gender) at two levels each. However, it occurred to me today, that this might ...
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### Balancing gender in an experiment

Say a study aims to see if two variables A and B are correlated in the general population. It isn't clear to me how extraneous variables like gender should be treated when the sample is selected. Each ...
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### 2 x 2 mixed anova?

96 participants were randomly assigned to one of the two groups regardless of their motivation level. Participants in both the groups were exposed to both the experimental conditions of gain framed ...
• 21
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### Do I need to counterbalance 8 audio excerpts to control for order effects?

I have 8, 1-minute audio excerpts, all that feature the same music. Four of them were recorded by a middle school music ensemble (2 expressive, 2 unexpressive) and four by a high school music ...
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1 vote
979 views

### Asymmetrical Order Effects in Within Subject Design?

I am currently running a study with two groups (control and current psy. disorder). All participants have three conversations, are videotaped and watch the videos of their interactions afterwards, two ...
440 views

### Simple experimental design - should I counterbalance?

I'm designing a pretty simple experiment that goes like this. Participants will be shown a series of stimuli and after viewing each one they will answer a few questions where they will make judgments ...
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1 vote
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### When does counterbalancing task participation order take care of practice effects?

I'm thinking of a study in which participants are randomly assigned to do task A then task B, or vice-versa. I figured there will be a problem if doing Task A is really good practice for Task B, but ...
2k views

### Can there be endogeneity?

I am performing a regression in which I suspect there could be endogeneity between the main explanatory variable and the dependent. As a first step I perform an OLS regression and then, to control for ...
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### When can I leave counterbalancing factors (between participants) in an ANOVA out of a write up?

The following is a problem that I keep encountering in different forms. For now, I give one example, but I would also be interested in the answers to the more general question. I have a design with a ...
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356 views

### Would a split-plot ANOVA be appropriate to look for order effects in my data?

I have a study in which 60 subjects took both drug A on one day and drug B on another. The order of drug administration was counterbalanced, such that 30 subjects took drug A on the first day and 30 ...
• 21
1 vote