**List of files in Analysis:**
### 1. Make Data Files
**mak_All.R** - R script to create an aggregate wide-format data file (dat_All.dat) that contains all measures used in reported analyses. This includes startle potentiation, baseline startle reactivity, and all individual difference self-report scale scores.
### 2. Analysis Files
**ana_PANAS.R** - R script to produce all analyses of PANAS self-report data reported in footnote 4.
**ana_STL.R** - R script to produce main analyses of Group X Condition (Unpredictable/Early vs. Predictable) for Startle potentiation overall and secondary Group X Time (Unpredictable Early vs. Unpredictable Late) for unpredictable stressors.
**ana_Table1.R** - R script provides descriptives and tests of Group effects for all variables reported in Table 1, and internal consistency (Cronbach's alpha) for self-report measures reported in note below Table 1.
**ana_Table2.R** - R script provides descriptives and tests of Group effects for all variables reported in Table 2.
### 3. Case Analysis and Checking Files
**cas_STLCaseAnalyses.R** - R script conducts case analysis of main startle models. Identifies one model outlier.
**chk_Order.R** - R script to produce robustness analyses to examine order effects in the difference score model.
**chk_Robustness.R** - R script to check various alternative analytic approaches to confirm reported Group X Stressor Type effect is robust.
**chk_STL_Covariates.R** - R script to evaluate demographics and affect measures as potential covariates. Covariates evaluated in model that contains GSR and Order but not Group.
**chk_STL_InternalConsistency.R** - R script to check split-half reliability analysis of raw startle and startle potentiation reported in footnote 2.
### 4. Figure Files
**fig_Figure1(STL).R** - R script to produce Figure 1 (Startle Potentiation by Group and Stressor Type)
**fig_Figure2(Moderators)_DataPointsRaw1.R** - R script to produce Figure2 (Individual Differences for Unpredictable (vs. Predictable) Startle Potentiation among Alcoholics).
