Faces/Houses task (FHT)


Are faces special?

The Faces/Houses task measures people's ability to process the visual features of an object, in this case, faces and houses. Face recognition is key to social interactions, informing us about a person’s identity as well as their sex, age and mood. Face perception has been linked to a specific brain area on the temporal lobe, the Fusiform Face Area. Face recognition may be influenced by a number of factors, including facial expression and race. Some researchers argue that faces are not special per se: we’re just experts because we see so many of them… so then perhaps realtors process houses just as fast as faces?

Resources:
  • Weiner, K.S., Grill-Spector, K. (2012). The improbable simplicity of the fusiform face area. Trends in Cognitive Science. 16(5):251-4. https://doi.org/10.1016/j.tics.2012.03.003
  • Kanwisher, N., et al. (1979). The fusiform face area: a module in human extrastriate cortex specialized for face perception. Journal of Neuroscience;17(11):4302-11. https://doi.org/10.1523/JNEUROSCI.17-11-04302.1997
  • Neuroskeptic. (2017). "Facephenes": Brain Stimulation Creates Phantasmal Faces. https://www.discovermagazine.com/mind/facephenes-brain-stimulation-creates-phantasmal-faces

Parameters
The following features can be tweaked (default values in parentheses):
  • Task instructions
  • Number of trials (96)
  • Number of practice trials (6)
  • Duration of fixation cross (500 ms)
  • Duration of feedback (1000 ms)
  • Whether trials should be randomized (yes)
    Note: trial sequences are randomized and balanced across conditions (face/house)

What data is collected? How is it scored?
The following variables are recorded:
  • FHT_reaction_time_house
  • FHT_reaction_time_face
  • FHT_correct_response_proportion_house
  • FHT_correct_response_proportion_face
The main variables are reaction time (ms) and the percentage of correct responses, calculated for both houses and faces.

What participants see before taking the task

In this task, you are shown multiple images and are asked to indicate whether you see a face or a house.

What participants see after taking the task

Why this task? Faces contain a lot of information that is relevant to our survival. It's important to be able to quickly recognize people you can trust and read emotions in both strangers and people you know. Knowing how people process faces can help scientists understand exactly how special they are.

Aggregate Variables

These data are automatically written to a csv file upon completion of the task

  • FHT_reaction_time_house
  • FHT_reaction_time_face
  • FHT_correct_response_proportion_house
  • FHT_correct_response_proportion_face

Duration

5 mins

Resources

  • Weiner, K.S., Grill-Spector, K. (2012). The improbable simplicity of the fusiform face area. Trends in Cognitive Science. 16(5):251-4. https://doi.org/10.1016/j.tics.2012.03.003
  • Kanwisher, N., et al. (1979). The fusiform face area: a module in human extrastriate cortex specialized for face perception. Journal of Neuroscience;17(11):4302-11. https://doi.org/10.1523/JNEUROSCI.17-11-04302.1997
  • Neuroskeptic. (2017). "Facephenes": Brain Stimulation Creates Phantasmal Faces. https://www.discovermagazine.com/mind/facephenes-brain-stimulation-creates-phantasmal-faces

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