Psychology and Neuroscience Stack Exchange
Psychology and Neuroscience Stack Exchange

Questions tagged [experiment-design]

70 questions
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How to recruit participants for fMRI study who do not fall asleep during experiment?

I'm in a psychology lab and we're having trouble getting participants for an fMRI study. We pay $150 per subject and we need to have several hundred healthy controls for one study. For the 20-minute study, the participant has to look at certain…
rooty
5
votes
1 answer

Does gender as a factor always make my experiment quasi-experimental?

I remember reading in a lot of introductory psychology texts that since there can be no random assignment of gender as a factor, the experiment can only be seen as a quasi-experiment. How does this work? Does gender as a factor always make my…
Charlotte SL
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Experimental design with two groups, pre-post measurement, and where everyone is treated

I am designing a study in which a large number of people are being treated. I cannot influence the treatment (e.g., a delayed treatment). I am able to make pre and post treatment measures on the subjects. The treatment has many effects on the…
StrongBad
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2
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1 answer

Why use a quasi experimental design when you can do an experiment?

I read about quasi-experimental design and the variations it has such as pre-test post-test non-equivalent groups, and also experimental designs. Having compared these two, I ascertained that the difference between this variation of…
Ali Sirous
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2
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E-Prime Scripting Issue: Pulling a Random Number from a Normal Distribution

I am using E-Prime (version 3) to design an experiment. In my script I have the following Variable = Random(1,100) This makes my variable a random number ranging from 1 to 100. I would like to make this variable be a random value pulled from a…
Kelley
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2
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2 answers

How do you raise the stakes in an experiment without actually paying people money?

I am trying to run a psychology experiment for one of my courses and it involves people trying to guard some "treasure" of theirs and trying not to lose it. My problem is that I can't ethically (or legally) force them to offer up their own money and…
noblerare
2
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0 answers

How to handle duplicated recommendations in an online experiment for the recommender system

I am about to run an online user experiment to compare different strategies of the recommender system. I will compare 18 strategies and each strategy produces five recommendations, thus I have to ask subjects to evaluate 90 recommendations in total.…
Benben
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Survey platforms that could meet survey needs

Im planning to do a research survey with a control and experiment group. I plan to use Google Form with the following idea in mind. Participants fill in their details The system will randomly assign whether the participant is in control or…
tech bitz
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Are there any online survey/questionnaire makers which allow use of sound clips?

I am looking to create an online data collection tool which would involve questions where a short sound clip is played, and the respondents would need to use a rating scale (possibly a slider) to respond. So far I've come across several sites which…
Lenna
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What is the difference between the structure and the conception of an empirical study in psychology?

Can someone explain to me the difference between the structure of an empirical study in psychology and its conception? My interpretation is so far that structure means the test arrangement and conception the basic concept of how the study is…
Rico1990
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What is the optimal way of structuring a multiple choice preference evaluation to determine most popular photo in a set?

Say I have a set of photographs and I want to ascertain the most popular one based on a group of people choosing their favourite. What is the most optimal way of structuring a survey to derive a confident estimate of most preferred photo with the…
mmilo
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0
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1 answer

Which experiment design is this? Between and within combined

The basis of my experiment are 4 neutral text snippets. For each text snippet, I create an uncertain and a certain version so that I have a total of 8 text snippets (2 versions for each text snippet, 1 certain and 1 uncertain version). The "version"…
Jensxy
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What would the effect on psychology experiments be if we found out that one person sees blue if another sees red?

Suppose we conducted an experiment that found that the color red makes people depressed and the color blue makes people happy. Now suppose we found out that when looking at a red object, person A sees red but person B perceives blue. Would the…
S S
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