This fTCD data was acquired in 2014/2015 for a DPhil project (Chapter 4). The student recruited N=231 participants. Useable data was acquired from N=215 of these participants. Two tasks were used: word generation (wordgen) and pyramids and palm trees (PPTT). All participants performed wordgen, but only N=156 of these performed the PPTT. After cleaning the data, we had N=151 participants with data on both tasks. Retest data was acquired in a subset of participants (wordgen N=30; PPTT N=19). The interval between sessions was 7-434 days. The data stored here has been anonymised by removing the participants' initials and DOBs. The anonymisation key is stored on the lab's secure network drives. The data stored here is as follows: - **Chpt4_fTCD_PPT_rawdata.zip**: 157 anonymised .exp files. One participant (208DAC1) appears to have been repeated one week subsequently. - **Chpt4_fTCD_PPT_retest_rawdata.zip**: 38 anonymised .exp files (2 x N=19). - **Chpt4_fTCD_wordgen_rawdata.zip**: 215 anonymised .exp files. - **Chpt4_fTCD_wordgen_rest_rawdata.zip**: 60 anonymised .exp files (2 x N=30). - **Chpt4_fTCD_demographics.csv**: demographics data on all 215 participants, including key to which participants performed which tasks. - **Chpt4_fTCD_data_dictionary.csv**: data dictionary for demographics data. **Data Analysis** Scripts are available to replicate our data analysis. To do this, please follow the instructions in **Analysis_ReadMe.pdf**.