Cognitive Psychology Practicals Online Resource

Designed by George Lovell and Ken Scott-Brown of Abertay University

 

Equipment Required

These experiments require a desktop or laptop computer. It's likely that the screen of a smartphone will be too small for some of the studies to run correctly. Also, the studies require a keyboard response, iphones and ipads don't display the software keyboard unless you're typing into a form, so these will not work correctly.

 

Early Vision

Run the study Get the data Description
Hermann Grid Illusion Results so far (N=23) Open Science Framework A visual illusion study based upon Schiller  and  Carvey (2005)..
The Ebbinghaus Illusion Results so far (N=30) Open Science Framework.

A context-based size illusion which has it's origins with the work of Hermann Ebbinghaus (1950-1909). Here we use visual psychophysics to estimate the percieved size of the disc as the illusion is varied. This is done by testing choices with different disc sizes, seeking to find the "point of subjective equality" [PSE] between the disc within the illusion and the disc on its own.This is a widely studied illusion that illustrates how context can influence our perception of size. The illusion has been examined in the context of schizophrenia (Silverstein et. al 2013), in developmental psychology (Doherty et. al, 2009), in baboons (Parron and Fagot, 2007) and even in baby chicks (Salva et al. 2013).

Simplified Ebbinghaus Illusion

Results so far (N=24) Open Science Framework.

This is a simpler version of the study above, here we simply count the number of times the central disc is "larger" or "smaller" than a disc on it's own. With this design we can see whether the illusion works, but we cannot identify how much it shifts the percieved sized of the disc.

Objects

Run the study Get the data Description
Mental Rotation Averaged data for participants (N=124) Open Science Framework. A cognitive task based upon Sheppard and Metzler (1971) using stimuli created by Ganis and Kievit (2015).
Fast detection of objects Averaged data for participants (N=73) Open Science Framework. Here we use the stimuli from Crouzet et. al (2012) to measure how quickly objects, animals and vehicles, can be detected against man-made and natural backgrounds. See also Fabre-Thorpe (2011).

Faces

Run the study Get the data Description
Face Familiarity Results (N=152) Open Science Framework A face familiarity study based upon Young, Hellawell and Hay (1987).Similar to the original study but with updated celebrities and a control condition featuring non-familiar faces.
Judging facial emotions Results (N=47) Open Science Framework. Based upon a combination of Knutson (1996), Hess, Blairy and Kleck (2000) and Bradley and Lang (1994).

 

Attention

Run the study Get the data Description
Change Blindness Results (N=141) Open Science Framework Based upon Rensink O'Regan and Clark (1997). Can you spot the changes made in these pairs of images? You'll be amazed how hard it is to spot even really big changes.
Gaze Cueing Results (N=8) Open Science Framework. Based upon Posner (1980) and Friesen and Kingstone (1998)
Visual Search Task Results (N=30) Open Science Framework. Triesman and Gelade's visual search task based upon Triesman and Gelade (1980). Search for items in a display based upon colour, shape or both colour and shape.

 

Memory

Run the study Get the data Description
Iconic Memory No data yet. George Sperling's Iconic Memory Experiment (Needs headphones) based upon Sperling (1960, 1963) and follow on papers.

 

Thinking and Biases

Run the study Get the data Description
Problem Solving Results (N=73) Open Science Framework. A study of problem solving based upon Gick and Holyoak (1980.
Gambling No data yet A study that measures your ability to predict coin tosses, very loosely based upon Gilovich, Vallone and Tversky (1985) and Roney and Trick (2009)