EXP-IVB-REP-3

informative

IVB Neutral Replication 3 — rotation=3

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 initial test suggested the system leaned towards cooperation, but this replication with a different starting order was too small to draw any conclusions. More tests are needed to see if the system's cooperative tendency is reliable.

What we found

UNDERPOWERED (N=1): No predictions scored

Predictions we made before running

0/2 confirmed

▶ Technical details

Research hypothesis

IVB NEUTRAL REPLICATION 3 (rotation=3)

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=3 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).