ld5: The dataset from Rouder et al. (2005) on the lexical task.
In quid: Bayesian Mixed Models for Qualitative Individual Differences

Description Usage Format Source

This is the cleaned dataset from Rouder et al. (2005) on the lexical task. Participants were presented with number stimuli ranging from 2 to 4 and from 6 to 8 and had to indicate whether the stimuli number is bigger or smaller than 5. The data cleaning that was performed was: removing two participants who gave up, excluding trials with too fast and too slow responses, excluding trials with wrong responses, excluding the first 20 trials of the first block, excluding the first trial in every block.

ld5

A data.frame of 17031 rows and 9 columns

sub: Factor with 52 levels giving the subject ID: 0-29, 35-42, 44-56, 58
block: Numeric values giving the block: 1-5
trial: Numeric values giving the number of the trial within a block
stim: Numeric values giving the type of stimulus: 0 = 2, 1 = 3, 2 = 4, 3 = 6, 4 = 7, 5 = 8
resp: Numeric values giving the participant's response: 1 = bigger, 2 = smaller
rt: Numeric values giving the response times in milliseconds
error: Numeric values indicating whether participant gave a wrong answer (all 0)
side: Factor with 2 levels indicating whether stimulus is below (1) or above (2) 5
distance: Factor with 3 levels indicating how far the stimulus number is away from 5

Rouder, J. N., Lu, J., Speckman, P., Sun, D., & Jiang, Y. (2005). A hierarchical model for estimating response time distributions. Psychonomic Bulletin & Review, 12(2), 195-223., retrieved from https://raw.githubusercontent.com/PerceptionCognitionLab/data0/master/lexDec-dist5/ld5.all

quid documentation built on Dec. 9, 2021, 9:06 a.m.