Don't fret, be supportive! maternal characteristics linking child shyness to psychosocial and school adjustment in kindergarten
Journal of Abnormal Child Psychology (2008) - Comment
pubmed: 17899358  doi: 10.1007/s10802-007-9183-7  issn: 0091-0627  issn: 1573-2835 

Robert J. Coplan, Kimberley A. Arbeau, Mandana Armer