  Data from the first physics run at the Relativistic Heavy-Ion Collider at
Brookhaven National Laboratory, Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV,
have been analyzed by the STAR Collaboration using three-pion correlations with
charged pions to study whether pions are emitted independently at freezeout. We
have made a high-statistics measurement of the three-pion correlation function
and calculated the normalized three-particle correlator to obtain a
quantitative measurement of the degree of chaoticity of the pion source. It is
found that the degree of chaoticity seems to increase with increasing particle
multiplicity.
