Data and Analysis Unit: PLY75

Last update: 2017-05-08 by Andy Wills

Description

Experiment investigating the effect of training order on category learning performance reported in Edmunds, Wills, Milton (2017), Experiment 4. This DAU contains stimulus image files, raw data, and analysis scripts, all in open cross-platform formats (see the file format notes).

Resources

PLY75stimuli.zip (3.9 MB) - Stimulus image files.
PLY75longData.csv (1.9 MB) - Trial-level raw data. Column headings are as follows:
- DAU: Experiment name
- Participant: Participant ID (unique across entire experiment)
- Condition: Experimental condition (either EasyHard or HardEasy)
- Block: Block number
- Trial: Trial number
- StimulusNo: Unique ID for each stimulus (number corresponds to numbered PNG files in PLY22stimuli.zip)
- Xvalue: The value of each stimulus on the spatial frequency dimension (in arbitrary units)
- Yvalue: The value of each stimulus on the orientation dimension (in arbitrary units)
- Difficulty: The difficulty of that stimulus (Easy, Med, Hard)
- Category: The category assignment for each stimulus (Category A=A and Category B=B)
- CorrectButton: The button associated with each category (Category A=c, Category B=m)
- Response: The response the participant gave (Category A=c, Category B=m)
- Correct: Whether the participant was correct or not (0 = incorrect, 1 = correct)
- RT: Reaction time in milliseconds
PLY75verbalReports.pdf (2.8 MB) - Scanned copies of the strategy reports produced by each participant.
PLY75verbalReports.csv (2 KB) - Participant level strategy information from verbal reports given by participants. Column headings are as follows:
- Participant: Participant ID
- Condition: Experimental condition (1 = Easy-to-hard, 2 = Hard-to-all)
- CERE: Classification of participant's strategy by Charlotte E.R. Edmunds.
- GW: Classification of participant's strategy by Gemma Williams
- Agreed: Classification of participant's strategy agreed by CERE and GW after discussion. For this and the previous two columns the codes are:
  - 2D = Generic two-dimensional rule
  - CJ=Conjunction rule
  - CJ2 = A double conjunction
  - NA = No relevant strategy information
  - RuleX = Rule plus exception
  - SUR = Sequential unidimensional rules
  - Udexp = Unidimensional rule plus exception
  - UDF = Unidimensional rule based on frequency
  - UDO = Unidimensional rule based on orientation
- CEREyes: Whether CERE thought the participant reported a strategy or not (1 = yes, 0 = no)
- GWyes: Whether GW thought participants reported a strategy or not (1 = yes, 0 = no)
- simpStrat: Simplified strategies. All complex rule-based strategies are given the label "Complex", and both unidimensional strategies are defined as "UD"
R scripts for analysis of PLY75. You will need R, plus the following packages that are available on CRAN: effsize, ggplot2, irr, rmisc, grt

PLY75 Functions.R (7 KB) - functions required by the other scripts, below.
PLY75_Analysis.R (11) KB) - Core statistical analysis
PLY75_GRT.R (4 KB) - Model-based analysis
PLY75_Verbals.R (1 KB) - strategy report analysis

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