Clarification on SSAGA, protocol, and executive control testing

[Evgenii Shvedovskii]

Dear HCP team,

Thank you for your earlier response regarding the SSAGA marijuana questions — it was very helpful.

I would like to clarify a few additional details concerning the general protocol, the SSAGA questionnaire, and the executive control testing:

• General protocol
  I noticed that your sample underwent drug urine testing. Was this specifically a urine test for marijuana, or a general drug screen? I could not find the exact title of the test.
• SSAGA questionnaire
  The MJ2 section of the questionnaire contains several items about the most recent period of cannabis use (e.g., “Have you used marijuana in the last 30 days?”). However, I did not find questions regarding the amount of cannabis used during this period (e.g., in the last 30 days). Are such questions included elsewhere in the questionnaire?
• Executive control tasks
  In the data dictionary, I found that participants completed the Flanker test as a measure of interference control (labeled as “inhibition” in the dictionary, though we distinguish between “interference control” and “inhibition”). I have two related questions:

1. Which specific measures from the Flanker test are included in the HCP dataset (e.g., reaction times, error rates)?
2. Does the dataset include any inhibition tasks, such as the Stop-Signal task or Go/No-Go?

Thank you very much in advance for your help.

Best regards,

_____________________

Evgenii Shvedovskii
Doctoral Candidate
Research Training Group “Neuromodulation of Motor and Cognitive Function in Brain Health and Disease” (RTG 2783)

University Clinic for Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy

OLTECH Doctoral Representative (Faculty VI)
Carl von Ossietzky Universität Oldenburg
Rahel-Straus-Straße 10
26133 Oldenburg
evgenii.s...@uni-oldenburg.de

+49 152 22026764