Data supporting "The Domain-Specificity of Face Matching Impairments in 40 Cases of Developmental Prosopagnosia"
datasetposted on 11.07.2019 by Sarah Bate, Rachel Bennetts, Jeremy Tree
Datasets usually provide raw data for analysis. This raw data often comes in spreadsheet form, but can be any collection of data, on which analysis can be performed.
This dataset contains data from a sequential same/different matching task. For full details of the procedure, see the accompanying publication "The domain-specificity of face matching impairments in 40 cases of developmental prosopangosia" or Bobak, A. K., Bennetts, R. J., Parris, B. A., Jansari, A., & Bate, S. (2016). An in-depth cognitive examination of individuals with superior face recognition skills. Cortex, 82, 48-62.
Participants: 40 individuals with developmental prosopagnosia and 60 individuals with typical face recognition ability (control). See accompanying paper for inclusion and exclusion criteria for each group. Participants are split into two age groups: younger (18-49 years old) and older (50-70 years old). The age (in years) of each participant is also included.
Task design: There are three categories of objects included in the task: faces, hands, and houses. For each object category, there were both upright and inverted (upside-down) trials in the task. There are two version of data for the house conditions: one included all of the trials in the experiment (houses ORIG); the second (houses ADJ) included only half of the original trials, in order to equate difficulty between the face and house conditions.
Measures: For each object/orientation combination, the following measures are included for each participant:
hits: correct responses to trials which displayed the SAME identity in both images (as a proportion of total possible hits)
correct rejections (CRs): correct responses to trials which displayed DIFFERENT identities in each image (as a proportion of total possible CRs)
dprime: the signal detection theory measure d', which measures sensitivity (higher scores indicate better performance, chance performance = 0)
c bias: the signal detection measure c, which measures response bias (scores above 0 indicate a tendency to say stimuli were not the same; scores below 0 indicate a tendency to say the stimuli were the same)
same RT: average correct reaction time for trials in which the correct response was "same"
different RT: average correct reaction time for trials in which the correct response was "different"
RT: average correct reaction time for "same" and "different" trials
See accompanying paper for additional details on data processing.