2Campbell S. B. Developmental issues in childhood anxiety. In R. Gittelman, Anxiety Disorders of Childhood. New Yook: Guilford Press,1986.
3Bowlby J. Attachment and loss: Separation. London: Hogarth Press, 1973.
4Stifter C. A. Couleham C. M. Fish M. Liking employment to attachment: The mediating effects of maternal separation anxiety and inter-active behavior. Child Development, 1993,64,1451-1460.
5Main M. Kaplan I. Cassidy J. Security in infancy, childhood and adulthood: A move to the level representation, In I Bretherton, E Waters (Eds), Growing Points of Attachment Theory and Research.Monographs of the Society for Research in Child Development, 1985,50,1-2.
6Halpern E. Separation and death differentiated with pictorialparadigms in four year-olds. In H M Van der Ploeg R Schwarzer, C.D.Spielberger, Advances in Test Anxiety Resarch. Lisse: Swets & Zeiflinger, 1985.
7Marvin R. S. An ethological and cognitive model of the attenuation of mother-child attachment behavior, In T Alloway, P Pliner, L. Kramer(Eds), Advances in the Study of communication and Affect, The Development of social Attachments. New York: Plenum Press, 1977.
8Simpson J. A. Rholes W. S. Phillips D. Conflict in close relationships:An attachment perspective. Joumal of Personality and Social Psychology, 1996,899-914.
9Templet P. I. The construction and validation of a death anxiety scale. Journal of General Psychology, 1970,82,167-177.
10Spinetta S. The dying child's awareness of death. Psychological Balletion, 1974,81,256-260.
