Description Usage Format Details Author(s) Source Examples
Data from Experiment 1 of Lawson et al. (2017), a free sort of a large set of everyday objects (140 items) by 30 adult participants.
1 | data("lawson")
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A data frame with 4200 observations on the following 5 variables.
ExptGroup
Experimental condition. 1 = pictures, 2 = words.
SjNo
Participant Number
CategoryNo
Category number
ItemNo
Stimulus number, range: 1-140
ItemName
Stimulus name
Lawson et al. (2017, Exp. 1) asked 30 adult participants to sort 140
everday objects into groups. Participants in the 'words' condition
sorted cards with the words listed in ItemName
printed on
them. Particiants in 'pictures' condition sorted cards with color
pictures depicting those words. The pictures are not reproduced here
for copyright reasons.
For each participant, CategoryNo
ranges from 1 to the number of
groups that participant created. Within a given participant, items
with the same category number were put into the same group. The number
itself is arbitrary (e.g. the number does not indicate which group was
formed first, there is no planned correspodence between a particular
category number across participants, etc).
Andy J. Wills (andy@willslab.co.uk)
Lawson, R., Chang, F. & Wills, A.J. (2017). Free classification of large sets of everyday objects is more thematic than taxonomic. Acta Psychologica, 172, 26-40.
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