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Balloon Analogue Risk Task (BART)

The experiment: ——

This is a simplified (and prettified) version of the BART task by Lejuez et al (2002). Participants have to blow up a balloon that they know will burst at some point. They ‘earn’ rewards for getting the balloons to be larger, but increase the risk of bursting it, in which case they earn no reward for that balloon. The question is, how many times does someone pump each balloon trying to optimise their rewards.

The measure is designed to quantify individual differences in risk-taking.

Analysing your data: ——

You should filter out data where the balloon burst and measure the number of pumps made for the remaining trials.

Notes: ——

WARNING: This is an advanced demo involving lots of code components

This can be extended to be more similar to the original paper by adding further colours of balloons with different bursting profiles.

In this task participants are required to judge which line is longer than the other. This experiment is based on illusion devised by Franz Carl Müller-Lyer in 1889.

This task requires the listener to choose if the set of sounds they will hear is high or low. The caveat is that in most sets we have also introduced background sounds meant to confuse the listener.

Sustained Attention to Response Task

Experimenting with a slider that can be controlled using the keyboard or mouse hover.

Traditional beads jumping to conclusions task with addition of distractor trials as in McLean et al (2018):

McLean, B. F., Mattiske, J. K., & Balzan, R. P. (2018). Towards a reliable repeated-measures beads task for assessing the jumping to conclusi

Tone discrimination paradigm

Working memory tests on JavaScript (digit span, operation span, visual array, spatial span)

This experiment demonstrates image/polygons matching as well as opacity on hover. The participant sees four images to choose from. One of the images is randomly chosen and presented at the center of the screen. The participant is required to select

a la Woods et al