Experiment Code:
TONSEQ_FY_IPLM_002

Introduction & Research Question:
The study sought to replicated TONSEQ_FY_IPLM_001, to further investigate how sequence learning under incidental conditions was differentially effected by the presence of two stimuli - this time two colours (yellow and purple) that occurred within on screen stimuli which followed a sequence. Based on simulations of human performance on the task, we expected that having tones that corresponded with on-screen response stimuli locations (Current: i.e. left = high and right = low) would produce LESS learning than having tones that corresponded with the previous response stimulus locations (Previous), which was supported by the results of TONSEQ_FY_IPLM_001. There was also a Random group, who experienced no relationship between Tone and Response Location and a No-Colour group, who experienced only white stimuli.

Participants:
96

Experiment Software:
MatLab

Method:
Participants responded with two spatially compatible key presses (x and >) to left and right circle flashes on screen, which lit up 500msecs after an inter-trial interval. These circle flashes followed a probabilistic sequence, whereby on 2/3rds of trials the current trial was the Same as the trial two trials previous. Therefore the (consistent) subsequences LLL, LRL, RRR and RLR were twice as likely as (inconsistent) subsequences LLR, LRR, RRL and RLL. Participants were not informed of these contingencies and simply instructed to respond quickly and accurately to the stimuli. Depending on the between-subject group participants were assigned to, participants either experienced white on screen circle flashes (No-Colour); or two colours that corresponded with either: the on-screen stimulus locations (Current); the previous on-screen stimulus location (Previous); or simply random (Random). The yellow and purple stimulus colours were counterbalanced for left and right locations across participants.  Participants completed one session and finally responded to a structured interview. 

Experimenter:
Fayme Yeates

Location:
Rooms: 230-1, 230-2, 228-2
Washington Singer Laboratories, University of Exeter

Date:
11/2013

Data file format:
.csv

Data file names:
TONSEQ_FY_IPLM_002_DA (Contains averaged participant data)
TONSEQ_FY_IPLM_002_training_xxx (Contains each response made across training and test for each participant, whose numbers replace the xxx)