| { |
| "release_cohort_contract": { |
| "contract_version": 2, |
| "research_provenance": { |
| "research_consent_field": "student_consented_to_research", |
| "research_consent_required_value": true, |
| "main_cohort_membership_basis": "physical_placement_in_1_main_leaderboard_data", |
| "public_profile_administrative_flags": [], |
| "source_collections": [ |
| { |
| "collection_id": "quant_run1_ai_human", |
| "instrument": "gre_quant", |
| "arms": [ |
| "ai", |
| "human" |
| ], |
| "experiment_run_ids": [ |
| 1 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.1-pro-high", |
| "gemini-3.5-flash-low", |
| "gemma-4-31b-high", |
| "gpt-5.4-mini-none", |
| "gpt-5.5-high", |
| "gpt-5.5-pro-med", |
| "kimi-k2.6", |
| "opus-4.8-off", |
| "opus-4.8-xhigh", |
| "sonnet-4.6-low" |
| ] |
| }, |
| { |
| "collection_id": "quant_run8_corrected_ai_and_control", |
| "instrument": "gre_quant", |
| "arms": [ |
| "ai", |
| "control" |
| ], |
| "experiment_run_ids": [ |
| 8 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.6-flash-low", |
| "opus-5-high" |
| ] |
| }, |
| { |
| "collection_id": "quant_run11_gemini37", |
| "instrument": "gre_quant", |
| "arms": [ |
| "ai" |
| ], |
| "experiment_run_ids": [ |
| 11 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.7-flash-medium" |
| ] |
| }, |
| { |
| "collection_id": "verbal_run4_ai_human", |
| "instrument": "gre_verbal", |
| "arms": [ |
| "ai", |
| "human" |
| ], |
| "experiment_run_ids": [ |
| 4 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.1-pro-high", |
| "gemini-3.5-flash-low", |
| "gemma-4-31b-high", |
| "gpt-5.4-mini-none", |
| "gpt-5.5-high", |
| "gpt-5.5-pro-med", |
| "kimi-k2.6", |
| "opus-4.8-off", |
| "opus-4.8-xhigh", |
| "sonnet-5-low" |
| ] |
| }, |
| { |
| "collection_id": "verbal_run6_corrected_ai", |
| "instrument": "gre_verbal", |
| "arms": [ |
| "ai" |
| ], |
| "experiment_run_ids": [ |
| 6 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.6-flash-low", |
| "opus-5-high" |
| ] |
| }, |
| { |
| "collection_id": "verbal_run9_control", |
| "instrument": "gre_verbal", |
| "arms": [ |
| "control" |
| ], |
| "experiment_run_ids": [ |
| 9 |
| ], |
| "ai_model_preset_ids": [] |
| }, |
| { |
| "collection_id": "verbal_run12_gemini37", |
| "instrument": "gre_verbal", |
| "arms": [ |
| "ai" |
| ], |
| "experiment_run_ids": [ |
| 12 |
| ], |
| "ai_model_preset_ids": [ |
| "gemini-3.7-flash-medium" |
| ] |
| } |
| ] |
| }, |
| "instrument_eligibility": { |
| "gre_quant": { |
| "assessment_bank_version_id": "gre_quant:assembly_main:27q-section47m:2c31aa3e", |
| "pretest_score_minimum_inclusive": 5, |
| "pretest_score_maximum_inclusive": 24 |
| }, |
| "gre_verbal": { |
| "assessment_bank_version_id": "gre_verbal:27q-section41m:037ffb6b", |
| "pretest_score_minimum_inclusive": 4, |
| "pretest_score_maximum_inclusive": 24 |
| } |
| }, |
| "assessment_effort": { |
| "minimum_item_time_seconds_each_test_inclusive": 600, |
| "maximum_tab_outs_inclusive": 10, |
| "scope": "pretest_and_posttest" |
| }, |
| "attempt_adjudication": { |
| "rule": "first_same_instrument_attempt_per_account", |
| "within_run_duplicate_rule": "completed_then_earliest", |
| "restricted_identity_verification_required_for_complete_check": true |
| }, |
| "treatment_integrity": { |
| "cross_model_lesson_plan_fallback_allowed": false, |
| "substantive_additional_treatment_allowed": false, |
| "provenance_pilot_arms_allowed_in_main": false, |
| "incidental_exposure_policy": "Retain only when PI adjudication documents exposure as non-substantive." |
| }, |
| "control_pretest_review": { |
| "minimum_seconds_inclusive": 300, |
| "scope": "control_tasks_only", |
| "required_condition": "reviewed_pretest" |
| }, |
| "outcome_fields_forbidden_for_selection": [ |
| "posttest_score_points", |
| "score_lift_points", |
| "headroom_normalized_score_lift", |
| "posttest_irt_theta", |
| "irt_theta_lift", |
| "posttest_correctness" |
| ] |
| }, |
| "analysis_cohort_eligibility": { |
| "apply_observed_outcome_filter": false, |
| "applies_to": [ |
| "gre_quant", |
| "gre_verbal" |
| ], |
| "assessment_question_count": 27, |
| "assessment_completion_boolean": "pre_and_post", |
| "assessment_completion_scope": "all_main_leaderboard_modalities", |
| "minimum_attempted_questions_each_test_inclusive": 14, |
| "physically_pruned_main_leaderboard": true, |
| "scope": "physically_pruned_main_leaderboard_data" |
| }, |
| "human_tutor_cost_sensitivity": { |
| "fixed_session_hours": 1.0, |
| "hourly_wage_usd": 75.0, |
| "interpretation": "Author-specified cost sensitivity scenario; not an observed human-tutor charge in the released study data." |
| }, |
| "resampling": { |
| "cost_per_gain_paired_participant_bootstrap": { |
| "draws": 10000, |
| "minimum_valid_draw_fraction": 0.95, |
| "seed": 20260814 |
| }, |
| "difficulty_calibration_participant_bootstrap": { |
| "draws": 4000, |
| "seed": 20260814 |
| }, |
| "early_mastery_cross_validation": { |
| "folds": 10, |
| "seed": 20260817 |
| }, |
| "engagement_participant_bootstrap": { |
| "draws": 4000, |
| "seed": 20260814 |
| }, |
| "gemini36_random_deletion_sensitivity": { |
| "iterations": 5000, |
| "seed_root": 20260814 |
| }, |
| "human_ai_section_permutation": { |
| "chunk_size": 1000, |
| "draws": 20000, |
| "seed": 20260807 |
| }, |
| "problem_flag_participant_bootstrap": { |
| "draws": 4000, |
| "seed": 20260814 |
| } |
| }, |
| "protocol_adherence": { |
| "ai_tutoring_activity": { |
| "all_three_required": true, |
| "distinct_problem_definition": "A practice problem is counted when answer_submission_count is at least 1; released data require this to agree with was_answered.", |
| "minimum_distinct_practice_problems_attempted_inclusive": 3, |
| "minimum_student_authored_chat_messages_inclusive": 3, |
| "minimum_total_practice_answer_attempts_inclusive": 5, |
| "scope": "ai_tutored_tasks_only", |
| "student_message_source": "student_ai_tutor_interaction_trajectory.csv rows with event_type=student_message and actor=student", |
| "total_attempt_source": "sum of answer_submission_count in student_practice_problem_attempts.csv" |
| }, |
| "arm_identity_exclusions": [], |
| "assessment_timing": { |
| "cutoff_inclusive": true, |
| "deduplication": "For each phase and question_id, use the earliest answer_submit event by server_elapsed_seconds.", |
| "event_timestamp": "server_elapsed_seconds", |
| "final_seconds_ignored": 300, |
| "insufficient_support_action": "retain_unless_another_gate_fails", |
| "instrument_windows": { |
| "gre_quant": { |
| "assessment_budget_seconds": 2820, |
| "cutoff_minutes_inclusive": 42, |
| "cutoff_seconds_inclusive": 2520 |
| }, |
| "gre_verbal": { |
| "assessment_budget_seconds": 2460, |
| "cutoff_minutes_inclusive": 36, |
| "cutoff_seconds_inclusive": 2160 |
| } |
| }, |
| "interval_definition": "Chronological differences between consecutive retained first submissions within a phase.", |
| "minimum_intervals_inclusive": 13, |
| "percentile_method": "linear", |
| "phase_boolean": "pre_or_post", |
| "phase_start_timestamp": "Use payload_json.<phase>_started_elapsed_seconds when present and valid; otherwise use server_elapsed_seconds of the phase_started event.", |
| "primary_rule": { |
| "label": "p90_before_final_five_minutes", |
| "percentile": 90, |
| "rapid_interval_threshold_seconds_exclusive": 10.0 |
| }, |
| "scope": "all_main_leaderboard_modalities", |
| "submission_event": "answer_submit", |
| "sensitivity_rule": { |
| "label": "p80_before_final_five_minutes", |
| "percentile": 80, |
| "rapid_interval_threshold_seconds_exclusive": 10.0 |
| } |
| }, |
| "task_level_boolean": "assessment_completion_and_assessment_timing_and_applicable_ai_tutoring_activity" |
| }, |
| "schema_version": 8, |
| "statistical_inference": { |
| "benjamini_hochberg_fdr_alpha": 0.05, |
| "confidence_level": 0.95, |
| "equivalence_margins_pooled_sd": { |
| "primary": 0.25, |
| "sensitivity": 0.2 |
| }, |
| "equivalence_tost_alpha": 0.05, |
| "holm_familywise_alpha": 0.05, |
| "nominal_two_sided_alpha": 0.05 |
| } |
| } |
|
|
