The current project site provides data generated during experimental tasks conducted at Karolinska Institute MR-Center in Stockholm, Sweden. Mono- and dizogotic twin pairs underwent tasks to test proximal, social and conditioned threat responses using concurrent fMRI and SCR measurement. Obtained results will be published in a series of papers and Source data files necessary to reproduce reported results and statistical images from all studies will be published on this site. Due to lack of explicit participant consent to share raw neuroimaging data, only processed summary data will initially be published. In the event that ethical approval to share raw neuromaging data is obtained at a later stage, this data will also be made publicly available on this site. Preprinted and published papers from the current project are listed below: (Preprint) Vinberg, K., Rosén, J., Kastrati, G., & Åhs, F. (2021). Whole Brain Correlates of Individual Differences in Skin Conductance Responses during Human Fear Conditioning. BioRxiv, 2021.04.20.440479. https://doi.org/10.1101/2021.04.20.440479