The Analysis was done in R version 4.3.1 (R Core Team, 2023) and JASP version 0.18.3 (JASP Team, 2024)

R was used for data cleaning and organisation, frequentist analyses, creating csv files for individual analyses in JASP, generating figures for the manuscript

JASP analysis file names are summarised below for each analysis. The html files contain analysis output as well as the analysis code.

REGISTERED ANALYSES.

Analysis 1 and 2: COVCOG_wave2_JASP_Analysis1and2.html

Analysis 3: COVCOG_wave2_piv_Analysis3.html

Analysis 4: COVCOG_wave2_pivRT_Analysis4.html

Analysis 5 accuracy: COVCOG_wave2_ALLaccuPivo_analysis5.html

Analysis 5 RTs: COVCOG_wave2_ALLRTPivo_analysis5.html

Analysis 6: COVCOG_wave2_vacc_analysis6.html

Additional registered analyses: COVCOG_wave2_allCog_addAnalysis.html

UNREGISTERED ANALYSES.

Comparison of memory tasks accuracy = Table 4: COVCOG_wave2_explorative_memTaskComp_1-5.html and results of Analysis 3 from the registered section. The different task comparisons are achieved by subsetting the MemTest column in JASP to achieve a subset of results from 2 tasks.

Analysis 2 but with outliers removed: COVCOG_wave2_extended_explor.html

Analysis 4 but with outliers removed: COVCOG_wave2_RT_nooutliers.html

Effect of Vaccination status on accuracy across all memory tasks: COVCOG_wave2_vacc_memtasks_explorative.html

Adding depression and anxiety as covariates: COVCOG_wave2_extended_explor.html

• for log transformed variables: COVCOG2_wave2_logtrans.html

Adding depression and anxiety as covariates to the analysis of memory performance (reanalysis of Analysis 5): COVCOG_wave2_explorative_reanalysis5.html

Time Since Infection: COVCOG_wave2_tSinceInfCat.html

• for logtransformed variables: COVCOG2_wave2_logtrans_TimeSI.html

Table 3.

col2 (registered analyses): COVCOG_wave2_JASP_Analysis1and2.jasp, COVCOG_wave2_allCog_addAnalysis.jasp.

col3 (after outlier removal): COVCOG_wave2_extended_explor.jasp.

col4 (log transformed): COVCOG2_wave2_logtrans.jasp.

col5 (depression and anxiety): COVCOG_wave2_extended_explor.jasp,COVCOG2_wave2_logtrans.jasp.

col6 (time since infection): COVCOG_wave2_tSinceInfCat.jasp, COVCOG2_wave2_logtrans_TimeSI.jasp.