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Hartup, Willard W.
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1

Origins of Aggression 

Psychological Studies ; 10
Wit, Jan de ; Hartup, Willard W - Reprint 2019 . , [2019]
Link: https://doi.org/10.1515/..
 
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2

History of Research in Developmental Psychology:

, In: Body and mind
Collins, W. Andrew ; Hartup, Willard W.. (2013) 
Link: https://doi.org/10.1093/..

Copies:  Zentrale:E03 a psy 450 m/567-1
 
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3

Relationships in Early and Middle Childhood:

, In: The Cambridge Handbook of Personal Relationships,
Hartup, Willard W. - p. 177-190 , 2006
Link: https://doi.org/10.1017/..
 
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4

Peer Interaction: What Causes What?:

Hartup, Willard W.
Journal of Abnormal Child Psychology.  33 (2005)  3 - p. 387-394 , 2005
Link: https://doi.org/10.1007/..
 
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5

Toward Understanding Mutual Antipathies in Childhood and Ad..:

Hartup, Willard W.
New Directions for Child and Adolescent Development.  2003 (2003)  102 - p. 111-123 , 2003
Link: https://doi.org/10.1002/..
 
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6

The Origins of Reciprocity and Social Exchange in Friendshi..:

Laursen, Brett ; Hartup, Willard W.
New Directions for Child and Adolescent Development.  2002 (2002)  95 - p. 27-40 , 2002
Link: https://doi.org/10.1002/..
 
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7

Growing points in developmental science: an introduction:

Hartup, Willard W ; Silbereisen, R. K , 2002
Link: https://search.ebscohost..
 
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8

Mutual Antipathies and Their Significance in Middle Childho..:

Abecassis, Maurissa ; Hartup, Willard W. ; Haselager, Gerbert J.T...
Child Development.  73 (2002)  5 - p. 1543-1556 , 2002
Link: https://doi.org/10.1111/..
 
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9

Heterogeneity among peer-rejected boys across middle childh..:

Haselager, Gerbert J. T. ; Cillessen, Antonius H. N. ; Van Lieshout, Cornelis F. M...
Developmental Psychology.  38 (2002)  3 - p. 446-456 , 2002
Link: https://doi.org/10.1037/..
 
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10

Mutual Antipathies and Their Significance in Middle Childho..:

Abecassis, Maurissa ; Hartup, Willard W. ; Gerbert J. T. Haselager..
Child Development.  73 (2002)  5 - p. 1543-1556 , 2002
Link: https://www.jstor.org/st..
 
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11

In Memoriam: Jan de Wit: 1928-2000:

Hartup, Willard W. ; Slot, N. Wim
International Journal of Behavioral Development.  25 (2001)  3 - p. 287-288 , 2001
Link: https://doi.org/10.1080/..
 
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12

Peer Experience: Common and Unique Features of Number of Fr..:

Gest, Scott D. ; Graham‐Bermann, Sandra A. ; Hartup, Willard W.
Social Development.  10 (2001)  1 - p. 23-40 , 2001
Link: https://doi.org/10.1111/..
 
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13

Developmental science at the millennium:

Hartup, Willard W.
International Journal of Behavioral Development.  24 (2000)  1 - p. 2-4 , 2000
Link: https://doi.org/10.1080/..
 
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14

Imaginary companions of preschool children:

Gleason, Tracy R. ; Sebanc, Anne M. ; Hartup, Willard W.
Developmental Psychology.  36 (2000)  4 - p. 419-428 , 2000
Link: https://doi.org/10.1037/..
 
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15

Friendships and Adaptation Across the Life Span:

Hartup, Willard W. ; Stevens, Nan
Current Directions in Psychological Science.  8 (1999)  3 - p. 76-79 , 1999
Link: https://doi.org/10.1111/..
 
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