Rigorous experimental design for applied and academic research.
Decision Process supports behavioral, social, and applied researchers who need Bayesian inference, clean randomization, and structured data collection — without standing up a custom analysis pipeline for every study.
Experiment Templates
Ready-to-run experiments
Work Block Length (N-of-1)
“90-minute deep work blocks produce higher daily output than 50-minute blocks.”
Conditions
- 50 min blocks (control)
- 90 min blocks
Metrics
- Self-Report Rating (1–10)
- Reaction Time (ms)
- Protocol Adherence (%)
Exercise Timing (N-of-1)
“Morning exercise improves same-day focus and mood more than evening exercise.”
Conditions
- Morning (6–9 AM) (control)
- Evening (5–8 PM)
Metrics
- Self-Report Rating (1–10)
- Reaction Time (ms)
- Protocol Adherence (%)
Sleep Duration Target (N-of-1)
“Targeting 8 hours of sleep produces meaningfully better next-day performance than 7 hours.”
Conditions
- 7h target (control)
- 8h target
Metrics
- Self-Report Rating (1–10)
- Reaction Time (ms)
- Protocol Adherence (%)
Caffeine Delay Protocol (N-of-1)
“Delaying first caffeine to 90–120 minutes after waking reduces afternoon energy crash.”
Conditions
- Immediate (0–30 min) (control)
- Delayed (90–120 min)
Metrics
- Self-Report Rating (1–10)
- Protocol Adherence (%)
Worked Example
Spaced vs. massed study sessions across 84 participants
A cognitive psychology lab assigns participants to either a massed study session (2-hour block) or a spaced condition (4 × 30-minute sessions over one week) for the same learning material. 42 participants per arm. Retention measured via test at 30 days.
Results: retention_score (%)
Massed practice (control)
mean: 58.3%
95% CI: 53.1–63.5
Spaced repetition
mean: 74.7%
95% CI: 69.8–79.6
P(better) = 99%
Spaced repetition produces a +16.4 percentage point improvement in 30-day retention (d = +0.91, large effect) at 99% posterior probability. This replicates the well-known spacing effect with high confidence in this sample. Results are ready for pre-registration and publication.
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