University of Iowa Studies in Child Welfare, Volúmenes7-8

ability activity adult aeroplanes age range average behavior Blatz blocks boys breathing capacity cent chil children's literature chronological age color companionship indexes comparison constant error correlation Dependent Clauses differences difficulty door dren eating eighth note experimenter extroversion factors failure Figure form discrimination board frequent Geometrical Form Boards girls given height individual intelligence quotient intervals Iowa Iowa City learning trials libraries Maltese cross Mean Deviation measure Median method months mother musical nonchoice notes number of trials object form boards observations orphanage children pairs parent education pattern percentage pitch positive stimulus form preschool children presented problem Psychol psychology recesses record relation reliability response rhythmic scores selected situation sleep SMTWTFS SMTWTFS SMTWTFS Social Reaction Index speed standard deviation subjects success Table tapping technique tion total number two-year-old units University of Iowa verbal controls Worcester York