EXP-IVB-REP-2

informative

IVB Neutral Replication 2 — rotation=2

2026-03-30 L5 level 1 runs $0.00

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In plain language

This experiment tested if a system that favors cooperation by default still works when the starting order of participants is changed. The researchers wanted to see if the system's tendency towards cooperation was due to its design or just the initial setup. Unfortunately, the experiment was not able to collect enough data to draw any conclusions.

What we found

UNDERPOWERED (N=1): No predictions scored

Predictions we made before running

0/2 confirmed

▶ Technical details

Research hypothesis

IVB NEUTRAL REPLICATION 2 (rotation=2)

Replication of exp-ivb-neutral with different agent rotation to test whether cooperation-as-default (IVB) is robust to starting position.

ORIGINAL RESULT: neutral framing → between-group diff=0.175, closer to cooperation (0.257) than competition (0.117). Group A dominant in all 3 conditions.

THIS REPLICATION: rotation=2 shifts round-robin starting agent, testing position artifact vs genuine IVB effect.

POOLED ANALYSIS: after all reps, compute one-sample t-test on neutral between-group diffs. If consistently > competition (0.117), IVB characterization tier achieved.

Experimental setup

Type: single_condition

Condition	Parameters
NEUTRAL	interaction: LIVE, persona: PERSONA

Factors: interaction (LIVE) × persona (PERSONA)

Parameters

model: gemini-2.5-flash-lite
n_agents: 8
n_rounds: 15
scheduler: round_robin
temperature: 0.9

Trophic Ratios by Condition

Mean trophic ratio per agent across runs. Error bars = ±1 std dev. Higher TR = more upstream (exporter).