e-tender for purchase of psychological tools , purchase of psychological tools , verbal discrimination learning , altruism scale , aggression scale , sociometry scale ( english ) , skinner box , span of attention ( tachistoscope , fall door type ) with cards , shuttle box , depth perception instrument ( mechanical ) , gsr biofeedback apparatus , phi-phenomenon apparatus , tachistoscope ( electronic apparatus ) , mirror drawing apparatus ( digital-transfer of training ) , stroop colour test ( adults ) , reaction time apparatus , mental imagery test , big five personality inventory , 16 p . f . questionnaire form a+b+c+d+e ( 15 yrs + ) ( all forms ) , emotional intelligence scale ( adults ) , memory drum -digital , rod and frame test , clinical assessment , p . g . i . general well-being measure ( pgigwb ) ( for adults ) , optimistic pessimistic attitude scale ( opas ) ( 13 to 25 years ) , organizational effectiveness scale , organizational climate scale , learning organization scale , multidimensional aptitude battery-ii - mab ( 16+ yrs )