Abstract: A reaction time enhancer for gradually decreasing a user's reaction time in aiming a shotgun at clay pigeons in trap shooting and other clay target sports, through repeated use. In a preferred embodiment the "T"-shaped reaction time enhancer is characterized by a horizontal rectangular bar provided with a shorter, vertical rectangular bar perpendicularly mounted on the bottom surface of the horizontal bar. A green lamp is provided on the vertical bar and seven spaced orange lamps are provided on the horizontal bar. The vertical bar contains a suitable electronic circuit which can operate the lamps in one of two different modes. In the first mode, which simulates singles trap shooting, a user initially aims a shotgun at the illuminated green lamp, then as quickly as possible, transfers his aim to a randomly-illuminated orange lamp.