Column 1:
id (unique identifier)


Column 2:
Group (sequence-space synaesthetes, controls)


Column 3:
Age


Column 4:
Gender


Column 5:
Highest qualification


Column 6:
syn_verified
whether synaesthesia status was fully objectively verified (i.e. passed synaesthesia test and questionnaire)


Column 7 - 12:
Individual factors of the Sussex Cognitive Styles Questionnaire


Column 13 - 14:
Arithmetic test score and response time



Column 15 - 20:
Scores and response times for the matching month priming test (session 1)


Column 21:
Number of minutes of practice per day since session 1


Column 22 - 27:
Scores and response times for the matching month priming test (session 2)


Column 28 - 29:
Scores and response times for the cross-years test (session 2)


Column 30:
Number of minutes of practice per day since session 2


Column 31 - 36:
Scores and response times for the matching month priming test (session 3)


Column 37 - 38:
Scores and response times for the cross-years test (session 3)


Column 39 - 40:
Scores and response times for the final main test (session 3)


Column 41 - 47:
Individual factors of the strategy questionnaire


Column 48:
average score calculated for the matching month priming test (overall absolute score) over sessions 1, 2, and 3 (used for exclusions based on performance)


Column 49:
average score calculated for cross-years tests (overall absolute  score) over both session 2 and session 3 (used for exclusions based on performance)


Column 50:
average score calculated over all tests (overall absolute  score) within session 3 (used for exclusions based on performance)