prMaxSD: Estimate Proportion of Observed Standard Deviation from Max...

In funfield-lab/fancyr: Fancy Statistics for Correlational (r) Analyses

Estimate Proportion of Observed Standard Deviation from Max Possible

Description

For a specified set of variables (with a common range), estimate the percentage of response variability that the person showed from maximum possible

Usage

prMaxSD(data, smin, smax, dir = 1)

Arguments

data	Matrix to be transformed (often will need to specify subset of larger dataframe)
smin	Scale minimum
smax	Scale maximum

Details

This is frequently valuable to identify people who did not vary their ratings substantially - which at extreme levels is generally indicative of insufficient effort responding.

Value

estimate of the proportion of the observed standard deviation of the row scores from max possible (range from 0 to 1)

References

Dunn, A. M., Heggestad, E. D., Shanock, L. R., & Theilgard, N. (2018). Intra-individual response variability as an indicator of insufficient effort responding: Comparison to other indicators and relationships with individual differences. Journal of Business and Psychology, 33(1), 105–121.

Wood, D., Harms, P., Lowman, G. H., & DeSimone, J. A. (2017). Response speed and response consistency as mutually validating indicators of data quality in online samples. Social Psychological and Personality Science, 8, 454–464.

Note: prMaxSD = .25 would be observed on a 5-point scale from a person rating ALL items as 50% one number and 50% the adjacent number (e.g., 50% 1's and 50% 2's, or 50% 3's and 50% 4's). Because it seems reasonably clear that these respondents with such score variability should be cut, .25 is suggested as a reasonable cut point. Note also that the code makes a minor adjustment to calculate within-person standard deviation as the population estimate (using N rather than N-1) to make maximum possible = 1

Examples

#combine with subset function to remove people with
#less than 30% of the maximum possible SD over this range
#(an indicator of invariant or insufficient effort responding)
datafile$prMaxSD <- prMaxSD(datafile[varSet], 1, 5)
subdata <- subset(datafile, prMaxSD > .25)

funfield-lab/fancyr documentation built on Nov. 21, 2023, 2:42 p.m.