Sundar TIME (Theory of Interactive Media Effects, 2015) — modality interactivity (slide/drag/zoom) vs message interactivity (system responds contingently to user input — defining feature of calculators/quizzes)

Summary

Claim: S. Shyam Sundar's Theory of Interactive Media Effects (TIME, Sundar et al. 2015) distinguishes modality interactivity (slide / drag / zoom) from message interactivity (system responds contingently to user input — the defining feature of calculators and quizzes).

Source: Sundar et al. (2015) TIME framework.

Confidence: Verified for framework.

Why this matters for Candid: Gives Candid the precise term — message interactivity — for what makes a tool different from a video or carousel. When making the engagement case, the contingent response is the structurally distinct feature.