Acceptability and effectiveness of group contingencies for improving spelling achievement

Turco, Timothy L.

Acceptability and effectiveness of group contingencies for improving spelling achievement - 27-38 - 1990 28, No. 1,

Enero 1991 = JOURNAL OF SCHOOL PSYCHOLOGY

DELETREO ESTUDIANTES DE LA ESCUELA ELEMENTAL GRADO 5 INCENTIVOS MEJORAMIENTO EDUCATIVO