title: Trajectories and Predictors of Sexually Aggressive Behaviors during Emerging Adulthood.
abstract: OBJECTIVE
  To assess longitudinal trajectories of college males' sexually aggressive behaviors and determine time-varying individual- and peer-level risk factors that differentiate men who follow these different paths.
  
  
  METHODS
  Our analytic sample consisted of 795 men who participated in a longitudinal study on high-risk behaviors among college students. The sample was surveyed at the end of each of their four years at university on a variety of measures, including sexual aggression (SA) and its hypothesized risk factors (hostile masculinity, number of sexual partners, alcohol misuse, and peer norms).
  
  
  RESULTS
  Using latent growth mixture modeling, we found four distinct SA trajectories - (1) consistently high, (2) decreasing, (3) increasing, and (4) consistently low. Multinomial logistic regression revealed that hostile masculinity and peer norms positively predicted trajectory membership at times when each trajectory reflected a high level of SA.
  
  
  CONCLUSIONS
  Our study adds to the knowledge base by elucidating the different ways sexually aggressive behaviors change during emerging adulthood and how confluence model-derived factors predict the different trajectories. The finding that changes over time in these risk factors correspond with SA perpetration risk informs prevention programming by illuminating the importance ofcontinualfocus on these risk factors throughout the college years, perhaps through annual self-assessments.
authors.affiliation: Department of Public Health Sciences, Clemson University.
authors.forename: Martie P
authors.initials: MP
authors.lastname: Thompson
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Swartout
authors.forename: Mary P
authors.initials: MP
authors.lastname: Koss
keywords: Sexual aggression; aggressive behavior; college students; latent class growth analysis; longitudinal design; sexual violence
references.citation: Am Psychol. 2000 May;55(5):469-80
references.pmid: 10842426
references.citation: J Pers Soc Psychol. 1995 Aug;69(2):353-69
references.pmid: 7643309
references.citation: Psychol Methods. 2001 Mar;6(1):18-34
references.pmid: 11285809
references.citation: Acad Emerg Med. 2006 Jun;13(6):629-36
references.pmid: 16614453
references.citation: Violence Vict. 2002 Aug;17(4):403-28
references.pmid: 12353589
references.citation: J Consult Clin Psychol. 2004 Oct;72(5):747-56
references.pmid: 15482033
references.citation: Dev Psychopathol. 2002 Winter;14(1):179-207
references.pmid: 11893092
references.citation: Biometrics. 1999 Jun;55(2):463-9
references.pmid: 11318201
references.citation: Violence Against Women. 2011 Mar;17(3):309-21
references.pmid: 26086978
references.citation: Aggress Behav. 2003 Aug;29(4):366-380
references.pmid: 26430287
references.citation: J Consult Clin Psychol. 1985 Jun;53(3):422-3
references.pmid: 3874219
references.citation: J Consult Clin Psychol. 2006 Aug;74(4):732-742
references.pmid: 16881781
references.citation: J Interpers Violence. 2011 Sep;26(13):2716-34
references.pmid: 21118861
references.citation: Psychol Rev. 1993 Oct;100(4):674-701
references.pmid: 8255953
references.citation: Aggress Behav. 2011 Sep-Oct;37(5):450-64
references.pmid: 21678429
references.citation: J Consult Clin Psychol. 1991 Oct;59(5):670-81
references.pmid: 1955602
references.citation: Psychol Violence. 2012 Jan;2(1):1-15
references.pmid: 22272382
references.citation: J Consult Clin Psychol. 1982 Jun;50(3):455-7
references.pmid: 7096751
references.citation: Alcohol Clin Exp Res. 2000 Jun;24(6):882-91
references.pmid: 10888079
references.citation: Annu Rev Sex Res. 2000;11:26-91
references.pmid: 11351835
references.citation: J Consult Clin Psychol. 1987 Apr;55(2):162-70
references.pmid: 3494755
references.citation: J Child Sex Abus. 2004;13(3-4):33-55
references.pmid: 15914389
references.citation: Am Psychol. 2010 Jan;65(1):1-12
references.pmid: 20063905
references.citation: Dev Psychol. 2009 May;45(3):652-76
references.pmid: 19413423
references.citation: J Interpers Violence. 2001 Aug;16(8):784-807
references.pmid: 26435575
references.citation: Annu Rev Psychol. 2000;51:539-70
references.pmid: 10751980
references.citation: Aggress Behav. 2015 Sep-Oct;41(5):467-77
references.pmid: 25735916
references.citation: Violence Against Women. 2011 May;17(5):568-83
references.pmid: 21531691