{
  "study_id": "bob_desirable_difficulty_001",
  "participant_id": "bob_001",
  "study_dates": {
    "start": "2024-01-06",
    "end": "2024-02-21",
    "total_days": 56
  },
  "phases": {
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      "weeks": [1, 2],
      "duration_days": 14,
      "total_cups": 64,
      "cups_per_week_avg": 32.0,
      "cups_per_day_avg": 4.57,
      "satisfaction_avg": 3.69,
      "afternoon_cups_total": 26,
      "pourover_ratio": 0.0,
      "context_distribution": {
        "home": 0.27,
        "work": 0.66,
        "out": 0.08
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    },
    "intervention": {
      "weeks": [3, 4, 5, 6],
      "duration_days": 28,
      "total_cups": 72,
      "cups_per_week_avg": 18.0,
      "cups_per_day_avg": 2.57,
      "satisfaction_avg": 4.37,
      "afternoon_cups_total": 4,
      "pourover_ratio": 0.5,
      "context_distribution": {
        "home": 0.57,
        "work": 0.43,
        "out": 0.01
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      "mastery_progression": {
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        "week_4": 0.86,
        "week_5": 1.0,
        "week_6": 1.0
      },
      "prep_time_progression_sec": {
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        "week_4": 324,
        "week_5": 278,
        "week_6": 248
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    },
    "washout": {
      "weeks": [7, 8],
      "duration_days": 14,
      "total_cups": 36,
      "cups_per_week_avg": 18.0,
      "cups_per_day_avg": 2.57,
      "satisfaction_avg": 4.5,
      "afternoon_cups_total": 4,
      "pourover_ratio": 0.42,
      "context_distribution": {
        "home": 0.44,
        "work": 0.44,
        "out": 0.11
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    }
  },
  "effect_sizes": {
    "primary_oec": {
      "metric": "cups_per_week",
      "baseline_mean": 32.0,
      "intervention_mean": 18.0,
      "washout_mean": 18.0,
      "absolute_change": -14.0,
      "percent_change": -43.75,
      "sustained_at_washout": true
    },
    "guardrail": {
      "metric": "satisfaction_seq_avg",
      "baseline_mean": 3.69,
      "intervention_mean": 4.37,
      "washout_mean": 4.5,
      "threshold": 4.0,
      "passed": true,
      "lowest_point": {
        "week": 3,
        "value": 3.62
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    },
    "mechanism_indicators": {
      "afternoon_cups_elimination": {
        "baseline_weekly_avg": 13.0,
        "intervention_weekly_avg": 1.0,
        "percent_reduction": 92.3
      },
      "pourover_adoption": {
        "week_3": 0.33,
        "week_6": 0.63,
        "washout_sustained": 0.42
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      "prep_time_mastery": {
        "week_3_avg_sec": 426,
        "week_6_avg_sec": 248,
        "improvement_percent": 41.8
      }
    }
  },
  "falsification_criteria_results": {
    "fc_001_20pct_reduction_by_week4": {
      "threshold": 0.2,
      "actual": 0.44,
      "passed": true
    },
    "fc_002_satisfaction_above_3": {
      "threshold": 3.0,
      "lowest_actual": 3.62,
      "passed": true
    },
    "fc_003_no_abandonment": {
      "completed_all_weeks": true,
      "passed": true
    },
    "fc_004_habit_transfer": {
      "baseline_cups_per_week": 32.0,
      "washout_cups_per_week": 18.0,
      "rebound": false,
      "passed": true
    }
  },
  "data_quality": {
    "diary_compliance": {
      "expected_days": 56,
      "completed_days": 56,
      "compliance_rate": 1.0
    },
    "observation_sessions": {
      "planned": 8,
      "completed": 8,
      "compliance_rate": 1.0
    },
    "cross_validation_failures": 0,
    "missing_optional_fields_rate": 0.021
  },
  "generated_at": "2024-02-21T18:00:00Z",
  "version": "1.0"
}