The ® rst part of this paper proposes a continuum of ideological premises that seeks to account for the broad range of immigrant integration policies adopted by Western democratic states. In the second part, a review of Social Psychological models of immigrant acculturation strategies demonstrates the need to explain more clearly the interactive nature of immig rant and host community relations. The Interac tive Acculturation Mode l (IAM) presented next proposes that relational outcomes are the product of the ac culturation orientations of both the host majority and immigrant groups as in¯uenced by state integration policies. The model makes predictions regarding the acculturation combinations most likely to produce consensual, problematic, and con¯ictual relational outcomes betw een immigrants and members of the host community. Social psycholog ical research is needed to test the validity of the IAM model empirically.La premie Á re partie de cet article propose un continuum des pre  misses ide  ologiques qui animent les e  tats de  mocratiques dans la formulation de leurs politiques d' inte  g ration envers les immigrants. En deuxie Á me partie, un survol des mode Á les propose  s par la Psychologie Sociale pour de  c rire les modes d' acc ulturation des immigrants de  montre la ne  cessite  de tenir compte de l' interaction entre les aspirations culturelles des groupes d' immigrants et celles de la communaute  d' accueil. Le mode Á le d' acculturation interactif (MAI), pre  sente  en troisie Á me partie, propose que les rencontres interculturelles seront consensuelles, proble  matiques ou con¯ictuelles, selon les permutations des modes d' ac culturation des immigrants et des membres de la communaute  d' accueil. Les assises the  oriques du MAI sont a Á ve  ri® er dans des recherches empiriques a Á venir.

Age, arrival date and reproductive success of male American Redstarts Setophaga ruticilla. -J. Avian Biol. 27: 164-170.We tested whether the age-related differences in reproductive success in male American Redstarts are caused by differences in date of arrival on the breeding grounds. By relating arrival date to three measures of reproductive success we determined what stage of the breeding cycle is affected by date of arrival. Adult male redstarts were more successful than subadults at obtaining mates. Adult males were also more likely than subadults to have nests built in their territories, and to fledge young. Among mated males, neither age class was significantly more likely to obtain nests. However, among males that nested, there were significant age-related differences in fledging success. Adult males arrived on the breeding grounds before subadults. Within both age classes, males that mated had arrived significantly earlier than those that did not mate. Similarly, males that nested had arrived significantly earlier than those that did not. There were no significant differences in arrival date between males that fledged young and those that did not. Finally, adult males were more likely to renest after nest failure. Therefore, we conclude that reproductive success in male redstarts is independently affected by both arrival date and age, and that the lower success of subadults may not be a consequence solely of their age and late arrival, but also of their lack of experience in selecting territories early in the breeding season.

In line with social identity theory (SIT), minimal group paradigm (MGP) studies have shown that high in-group identifiers discriminate more than low in-group identifiers. But why do some people identify more to their ad hoc group in the MGP? One week prior to a MGP study, 121 undergraduates completed scales assessing their ethnocentrism, authoritarianism, and personal need for structure. In Phase 2, the same participants took part in a MGP study in which us-them categorization was either assigned randomly or was chosen. Participants who chose their group membership identified more with their own group and discriminated more than respondents randomly assigned to their group. Path analysis showed that ethnocentrism and perception of control over group ascription predicted degree of in-group identification, which in turn, was positively related to discriminatory behavior.

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The purpose of the present study was to test the predictions derived from 3 models of Psychological Momentum (PM) regarding the elusive PM-performance relationship. Participants competed in one of two 12-minute bogus bicycle races. They were randomly assigned to either a no-momentum race (i.e., tied) or a positive-momentum race (i.e., coming from behind to tie). Perceptions of PM and cycling performance were measured at 4 different points in time. Results from between- and within-subject analyses demonstrated that when participants lost the lead, their perceptions of PM decreased significantly. When participants regained the lead, their perceptions of PM increased significantly. Between- and within-subject analyses of variance also showed that experiencing PM led to increased performance. However, losing PM also led to performance enhancement, presumably through negative facilitation (Cornelius, Silva, Conroy, & Petersen, 1997). Results are discussed in light of models of PM, and avenues for future research are offered.