**LINK TO PUBLICATION** https://www.jneurosci.org/content/40/23/4536 ------ **SUPPLEMENTAL MATERIALS** *All supplemental materials are available to be downloaded individually below or as one .zip file from Files* **TABLES:** [Table SI-1: Details on the participants' age, sex, and handedness in Experiments 1-30] [1] [Table SI-2: Neural response estimates in the language and multiple demand fROIs for the two critical experimental conditions (sentences and words) in Experiments 1-30] [2] [Table SI-3a H>E: Neural response estimates in the multiple demand fROIs for the conditions of the multiple demand localizer with the hard > easy spatial WM contrast] [3] [Table SI-3a N>S: Neural response estimates in the multiple demand fROIs for the conditions of the multiple demand localizer with the nonwords > sentences contrast] [4] [Table SI-3b: Neural response estimates in the language fROIs for the conditions of the language localizer] [5] [Table SI-4: Information on participant overlap across Experiments 1-30] [6] **DATA ANALYSIS:** [Functional masks for the multiple demand network] [9] [Functional masks for the language network] [10] [Custom MATLAB scripts used for the individual-subject fROI analyses ] [8] Whole-brain activation maps for the critical and localizer contrasts *Analysis scripts use the supplemental tables above* [R Notebook script used for the critical and control analyses] [7] [MATLAB script used for the multiple demand cross-validation analysis] [11] **FIGURES:** *Available to be downloaded individually or as one .PDF file from Files* - **Figure SI-1: Responses of each fROI to the sentences and word lists conditions across experiments.** Responses to sentences (red) and word lists (blue), based on beta weights for the corresponding regressors in the GLM, are presented as empirically fitted probability density functions (PDFs) over participants (pooled across all experiments). PDFs are shown for each fROI in (A) the left hemisphere MD network; (B) the right hemisphere MD network; (C) the left hemisphere language network; and (D) the right hemisphere language network. Thick, Dots depict data for individual participants who deviate from the group mean by more than 3 standard deviations. Thick, colored lines show the median, and gray rectangles show 95% confidence intervals (for most fROIs, these are very narrow and are thus hidden behind the median line; but see, e.g., the first 3 language fROIs in the left hemisphere). - **Figure SI-2: Responses of each fROI to passive and task-based paradigms across experiments.** Responses to passive (red) and active task (blue) paradigms are presented following the same convention as in Figure SI-1. - **Figure SI-3: Responses of each network and hemisphere to sentences in three selected experiments.** Responses (beta weights for the corresponding regressors in the GLM) are shown averaged across fROIs in the MD (red shades) and language (blue shades) networks, separately for the left (darker colors) and right (brighter colors) hemispheres. These three experiments included sentence (i.e., not word-list) materials and employed a passive comprehension (i.e., no-task) paradigm. Dots show data for individual subjects, bars show the average response across subjects, and errors bars show standard errors of the mean across subjects. - **Figure SI-4: Responses in the LH and RH MD fROIs to the critical conditions in four experiments, with data preprocessed and modeled in SPM5 (dashed line) vs. SPM12 (solid line).** [1]: https://www.dropbox.com/s/imc047n0vwfj92m/Diachek%20et%20al.%20SI-Table4.xlsx?dl=0 [2]: https://www.dropbox.com/s/hl0641rn5rqvb8q/Diachek%20et%20al.%20SI-Table2.xlsx?dl=0 [3]: https://www.dropbox.com/s/ylsthiysg2xc2mz/Diachek%20et%20al.%20SI-Table3a%20H%3EE.xlsx?dl=0 [4]: https://www.dropbox.com/s/zwzar96exbuv837/Diachek%20et%20al.%20SI-Table3a%20N%3ES.xlsx?dl=0 [5]: https://www.dropbox.com/s/bij6y4lgseg3zek/Diachek%20et%20al.%20SI-Table3b.xlsx?dl=0 [6]: https://www.dropbox.com/s/bz0qp5t9ymaut65/Diachek%20et%20al.%20SI-Table1.xlsx?dl=0 [7]: https://www.dropbox.com/s/23yzsjalzv3p27p/Diachek%20et%20al.%20Critical%20analyses.Rmd?dl=0 [8]: https://www.dropbox.com/s/xial2t1vdkgdd1n/spm_ss.zip?dl=0 [9]: https://www.dropbox.com/s/k4rw1ibe5y58x73/Multiple%20demand%20functional%20masks.nii?dl=0 [10]: https://www.dropbox.com/s/b40jskvavaifcw6/Language%20functional%20masks.nii?dl=0 [11]: https://www.dropbox.com/s/up5knic2d7zwhpb/testLocalizers.zip?dl=0