**Data Access** Note: This matches information available in the RMarkdown analyses scripts and output available at https://osf.io/hdrax/ EEG data is available upon request by emailing midus_brainimaging@aging.wisc.edu. After filling out the required data usage agreement, researchers will be able to access the storage server to download the “pretask_baseline_eeg_metrics_2022_release.tsv” which this script refers to. The raw continuous data is also available through this data sharing mechanism. Demographic data is available through the MIDUS Colectica Portal, midus.colectica.org. Users will be asked to create an account before being able to access the data. This script requires the following variables to be downloaded from the MIDUS Colectica portal, and is written for downloads completed in .csv format. See MIDUS 2 documentation for additional information about each variable. A public basket of these variables is available at https://midus.colectica.org/Basket/Details/d9f4d619-d127-4d7f-b83c-b2d6154636fb Note you will need to sign into Colectica before clicking the link to access the dataset. Variable Name | Description ------------------|------------------ M2ID | Includes the MIDUS 2 ID M2FAMNUM | Participant family number, used in supplemental analyses to account for genetic dependencies among siblings and twins. SAMPLMAJ |Participant sample. 1 = Main, 2 = Sibling, 3 = Twin, 13 = Milwaukee B1PRSEX |Participant sex reported at MIDUS2 Neuroscience Project. 1 = male, 2 = female B5PAGE |Participant age reported at MIDUS2 Neuroscience Project in years B5HAND |Participant handedness reported at MIDUS2 Neuroscience Project. 1 = right handed, 2 = left handed B1PF7A |MIDUS2 Main sample participant race, reported at MIDUS2 Survey Project. 1 = White, 2 = Black and/or African American, 3 = Native American or Alaskan Native Aleutian Islander/Eskimo, 4 = Asian, 5 = Native Hawaiian or Pacific Islander, 6 = Other (specify), 7 = Don't know, 8 = Refused B1PF7A |MIDUS2 Milwaukee sample participant race, reported at MIDUS2 Milwaukee Survey Project. 1 = White, 2 = Black and/or African American, 3 = Native American or Alaskan Native Aleutian Islander/Eskimo, 6 = Other (specify), 7 = Don't know B1PF1 |MIDUS2 Main sample participant ethnicity, reported at MIDUS 2 Survey Project. 1 = Not Spanish/Hispanic, 2 = Mexican, 3 = Mexican American, 4 = Chicano, 5 = Puerto Rican, 6 = Cuban, 7 = Other Spanish (specify), 97 = Don't know, 98 = Refused BACF1 |MIDUS2 Milwaukee sample participant ethnicity, reported at MIDUS 2 Milwaukee Survey Project. 1 = Not Spanish/Hispanic, 2 = Mexican, 4 = Chicano, 5 = Puerto Rican, 6 = Cuban, 7 = Other Spanish (specify), 97 = Don't know, 98 = Refused