Mean positive and negative expressive behaviors (± standard error) in desired gift and disappointing gift conditions for CWS (n = 16) and CWNS (n = 16); no significant difference, U = 117.50, p = .65, between CWS and CWNS for positive behaviors displayed after receiving a desirable gift; significant difference, U = 79.00, p = .04, between the CWS and CWNS for negative behaviors displayed after receiving a disappointing gift.