Table 1.

Observation instrument: Criteria and corresponding categories and codes.

Criterion	Category
Position of referee	POS_CEN: center of court POS_FON: goal line
Responsibility: Whether or not the call that was made or should have been made was the responsibility of the referee being observed	PER_SI: Yes, the call was his responsibility PER_SI: No, the call was not his responsibility
Whistle: Whether or not the whistle was blown	PIT_SI: Yes, the whistle was blown PIT_NO: No, the whistle was not blown
Decision (responsibility)	MDO_ACI: The call was correct and was the responsibility of the referee being observed MDO_ERO: Error of omission; the call was the responsibility of the referee being observed but was not made MDO_ERC: Error of commission; the call was not the responsibility of the referee being observed but was made
Type of infraction	TIP_TECGF: Technical, free throw TIP_TEC7: Technical, 7-meter throw foul TIP_DIS: Warning, progressive punishment, direct dismissal, disqualification or disqualification with written report TIP_T-D: Technical foul-punishment; free throw or 7-meter throw fouls that include a personal punishment TIP_T-T: Technical-tactical; loss of possession without punishment TIP_TTD: Technical-tactical with punishment; loss of possession with punishment
Decision (action)	MDA_ACI: Correct call MDA_ERR: Incorrect call