R1 — When recommending an interactive tool, LEAD on peer-reviewed mechanism evidence (goal-gradient, self-reference, IKEA, reciprocity, anchoring) — NOT vendor "2× / 47% / 16.9×" stats

Rule: When making the positive case for an interactive tool in a client conversation or marketing copy, lead with peer-reviewed mechanism evidence: goal-gradient (Kivetz, Urminsky & Zheng (2006), Journal of Marketing Research — goal-gradient in consumer contexts: cafe loyalty stamps completed faster as customers neared reward; online raters persist longer near reward), self-reference (Tam & Ho (2006), Information Systems Research — content relevance + self-reference mediate the effect of web personalization on attention, processing, decisions; users clicked self-referent offers far more, De Keyzer et al. (2025), Journal of Advertising — meta-analysis: actual personalization outperforms imagined / scenario personalization via stronger self-referencing and perceived relevance), IKEA + endowment (Norton, Mochon & Ariely (2012), Journal of Consumer Psychology — IKEA effect: effort/co-creation raises valuation of the result ("labor leads to love") BUT ONLY WHEN TASK IS SUCCESSFULLY COMPLETED, Sarstedt, Neubert & Barth (2017), Journal of Marketing Behavior — independent conceptual replication of IKEA effect (loom bands); psychological ownership identified as the mediating mechanism), reciprocity (Cialdini reciprocity principle (Influence; 240+ peer-reviewed papers) — one of the most robust, cross-cultural principles of influence; formal articulation: Gouldner 1960), present bias (Ainslie (1975) + Phelps & Pollak (1968) — present bias / hyperbolic temporal discounting: people overvalue immediate rewards relative to delayed ones). Do NOT lead with the vendor "interactive content 2× engagement" / "47.3% vs 2.8%" / "52.6%" figures.

Why: The mechanism evidence is independent and peer-reviewed; the vendor stats trace to ion-interactive-sponsored opinion surveys (Demand Metric 2014 Content & the Buyer's Journey Benchmark Study — vendor-sponsored online opinion survey of 185 marketers; the "2× engagement" headline rounds 70%/36%), Mediafly vendor research (Mediafly / Demand Metric: "Interactive content shows 52.6% higher engagement than static; buyers spend 13 vs 8.5 minutes" — vendor sources, treat as marketing not fact), and Outgrow self-analysis (Outgrow's "interactive forms 47.3% vs static 2.8%, a 16.9× improvement" is the vendor's analysis of its own customers' 50,000+ forms — not an independent benchmark). The mechanism case survives scrutiny; the vendor case does not. Pair with the calculator brief's R5 — Disregard vendor-sourced "interactive content converts better" statistics in client conversations.

How to apply:

• Train Candid sales conversations on the seven mechanisms, not on the vendor stats.
• In marketing copy, cite Kivetz / Tam-Ho / Norton-Mochon-Ariely / Cialdini by name; do not quote 52.6% or 2× engagement without provenance.
• When a client raises a vendor stat, surface the provenance and pivot to the mechanism case.