Calculation of pathway values, defined as the difference between residuals of full model and reduced model lacking the pathway variable. The larger the difference, the more a case qualifies as a pathway case suitable for the analysis of mechanisms.
Full model including covariate of interest (= pathway variable)
Reduced model excluding covariate of interest
The difference between the absolute residuals of the full and reduced model follows the approach developed by Weller and Barnes (2014): Finding Pathways: Mixed-Method Research for Studying Causal Mechanisms. Cambridge: Cambridge University Press. https://doi.org/10.1017/CBO9781139644501).
The calculation of the absolute difference between the full-model and reduced-model residuals, given a case's reduced-model residual is larger than its full-model residual, follows the proposal by Gerring (2007): Is There a (Viable) Crucial-Case Method? Comparative Political Studies 40 (3): 231-253. https://journals.sagepub.com/doi/10.1177/0010414006290784)
A dataframe with
- all full model variables,
- full model residuals (
- reduced model residuals (
- pathway values following Weller/Barnes (
- pathway values following Gerring (
- variable showing whether Gerring's criterion for a pathway
case is met (
1 2 3
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.