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An embedded html demographics form (online only) using iFrame code shared by @arnon_weinberg. The responses are saved to the data file as expInfo variables, which means that they will appear on every line of the data if the form is placed first.

Alternate between finding targets in two sequences.

This is an illustration of how to run a labjs experiment from pavlovia.org.

In this task participants are required to memorise and recall number series in order. Participants start out with three 3-digit sequences. If participants correctly recall 2 out of 3 three sequences, they progress to 4-digit sequence trials and so on. If participants respond incorrectly on 2/3 trials the experiment terminantes. This experiment is based on the original digit span experiment by Jacobs (1887).

Created for Eliza Yujun Ng December 2018

Numbers are presented at a rate of one per second. The first digit cannot be 0 Following digits can be 0 but cannot be the same as the previous digit.

If the answer is correct the span is increased for the next trial If the answer is wrong the span is decreased for the next trial

If there are at least two errors at a given span and that represents more than half of the total attempts at that span then the experiment ends, returning a span of one less than the final span attempted.

testing to see how real-time mouse position collection could work

In this task participants are required to press either left or right arrow key depending on which way the fish in centre is facing. Participants are required to ignore the direction of the surrounding fish. This is a children version of Flanker Task based on M. Rosario Rueda et al. (2004).

Sternberg Working Memory Task demo.

A small study for spatial Reasoning

A demo based on the Bilingual Stroop effect. Also demonstrates how to achieve a counterbalanced design.