Discovering a heterogeneous interference with the dual index calculation method
Created by Attila Krajcsi at 2018-11-30 15:32:41, updated at 2019-02-16 10:10:12
Short description There could be interferences in a group where some participants show an interference with a specific direction, and other participants show an interference with the opposite direction. On group level the mean of the interference may be zero, and the pattern is indistinguishable from a zero-effect interference with large noise. In those cases the dual index calculation method can reveal the interference. More information is at https://www.thenumberworks.org/heterogeneous_interference.html .
Reference Attila Krajcsi, Gábor Lengyel, Ákos Laczkó (2018). Interference between number magnitude and parity: Discrete representation in number processing. Experimental Psychology. 65(2), 71–83. https://doi.org/10.1027/1618-3169/a000394
Authors Attila Krajcsi, Gábor Lengyel, Ákos Laczkó
Comment by Attila Krajcsi (2019-01-25 12:22:41)
We recommend using this method for anyone who measures interferences. It is recommended to use this method together with the classic method. Roughly speaking, this method can detect the heterogeneous part of the effect, while the classic method can detect the homogeneous part of the effect.
- For entirely heterogeneous effects, this method reveals the interference, while other methods either would require additional calculations (as in Dehaene et al., 1993 to detect the SNARC effect for Iranian participants) or couldn’t detect the interferences at all.
- For a mixed (partly heterogeneous, partly homogeneous) interference effect, this method can reveal some “missing” part of the interference. For example, in the paper above we found that the MARC effect is partly heterogeneous, which might explain why the MARC effect is a less reliable effect than the SNARC effect when measured with the classic method.
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