Meeting 2: workshop

Deliverable: Eight-item Stroop pilot with correct condition labels, scoring, and safe summaries. Work from materials/workshop-starter/; attempt the core tasks before consulting the released reference solution. Pair work is encouraged; switch driver/navigator roles halfway.

W1. Stimulus and conditions (15 min)

Read ink_color dynamically rather than always showing black. Inspect congruent and incongruent items; confirm every target-color key.

W2. Randomize and score (20 min)

Use all eight items in random order. Complete correctness/omission logic. Verify four rows per condition and balanced ink colors.

W3. Summaries and audit (25 min)

Add the provided summary and explain every filter. Run an all-timeout pilot. Use the synthetic CSV to hand-check the calculation, then download your own pilot.

Acceptance checks

Workshop: eight Stroop rows, four per condition, each ink once in each condition. Synthetic key: 50% accuracy overall/by condition, two omissions, mean correct RT 800 ms overall, 600 congruent, 1000 incongruent. Assignment 2 deliberately expands to 16 balanced items.

Save the source and one clearly labeled self/synthetic pilot export. This in-class work is formative; graded homework has a separate brief and may require more items.

If you finish early

Add balanced items, distinguish sampling from repetition, or demonstrate a deterministic order for debugging. Do not introduce post-hoc RT exclusions.

Exit ticket

Explain the two timeline-variable methods and the accuracy/RT denominators.

Download this meeting’s starter files, or use the matching folder in the whole student course download.