ld5: The dataset from Rouder et al. (2005) on the lexical task.

Description Usage Format Source

Description

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.

Usage

1

Format

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

Source

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.