01 // Definition Term

// ##dual-def

= Dual Coding Theory — the hypothesis that memory is enhanced when information is encoded in two separate cognitive subsystems: verbal and non‑verbal (imagery).

. Proposed by Allan Paivio (1971, 1986).

. Verbal system handles language; non‑verbal handles visual, spatial, auditory, motor.

→ Two independent retrieval paths → greater chance of recall.

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02 // Two Channels Mechanism

// ##dual-channels

~ Verbal channel — processes words, propositions, linguistic structure.

~ Non‑verbal channel — processes images, spatial layout, color, sound, motor actions.

. Channels are separate but can work in parallel and cross‑activate.

. Concrete words (e.g., "dog") are naturally dual‑coded; abstract words require deliberate association with imagery.

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03 // CLN Dual Coding Application

// ##dual-cln

→ Verbal — operator labels (= definition, ! risk) and content text.

→ Non‑verbal — operator color, left‑border, indentation depth, spatial position on page.

. Each line is simultaneously a linguistic unit and a visual object.

+ Reading a CLN document automatically engages both channels → stronger encoding.

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04 // Interaction Layer Extension

// ##dual-interaction

+ Personal tags (#tagmarry) add another verbal layer — your own words.

+ Anchors (color highlights) add a non‑verbal personal mark.

+ Decisions add a semantic‑verbal layer with personal commitment.

+ All interactions are stored as traces — a visual timeline that itself becomes a non‑verbal retrieval cue.

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05 // Open Questions Future

// ##dual-open

? Does dual coding work equally well for highly abstract concepts encoded in CLN?

? Can we measure the relative contribution of verbal vs non‑verbal channels in CLN recall?

? Is there an optimal balance between operator colors and user‑added colors?

? How to design for users who are less visually oriented?