First-yes-counts instruction is beneficial to suspects and should be included in all future lineups

First-yes-counts instruction only has a statistical impact on the number of suspect IDs due to the termination of the lineup

First-yes-counts instruction produces conservative criterion shifts (ie reduces the number of identifications) in eyewitnesses and can therefore be misleading

First-yes-counts instruction does not affect the number or type of identifications by eyewitnesses in lineups