?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Depression+as+bargaining%3A+The+case+postpartum&rft.creator=Hagen%2C+Edward+H&rft.subject=Evolutionary+Psychology&rft.subject=Clinical+Psychology&rft.subject=Social+Psychology&rft.description=It+was+recently+hypothesized+that+depression+might+function%2C+in+part%2C+as+a+bargaining+strategy+when+cooperation+imposes+a+net+cost+but+there+are+social+constraints+on+defection+(Hagen+1999).+If+so%2C+such+social+constraints+should+be+associated+with+depression%2C+and+depression+in+one+partner+should+be+associated+with+increased+investment+by+other+partners.+Several+predictions+of+this+hypothesis+were+tested+using+postpartum+depression+(PPD)+as+a+model+for+depression+in+general.+The+depression+levels%2C+abortion+attitudes%2C+additional+mating+opportunities%2C+and+investment+in+childrearing+of+240+mothers+and+fathers+with+a+new+child+were+measured+using+self+report+instruments.+Mothers+were+also+asked+whether+the+new+child+was+planned+and+whether+it+was+wanted.+Perceived+constraints+on+abortion+correlated+significantly+with+PPD+levels%2C+but%2C+as+predicted%2C+only+for+mothers+with+an+unplanned+or+unwanted+child.+Contrary+to+predictions%2C+perceived+constraints+imposed+by+family+and+friends+did+not+correlate+with+PPD+levels.+Social+constraints+on+the+pursuit+of+extra-pair+copulations+also+correlated+significantly+with+PPD+levels%2C+but%2C+as+predicted%2C+only+for+men.+As+predicted%2C+PPD+levels+in+one+spouse+correlated+significantly+with+increased+investment+in+childrearing+as+reported+by+the+other+spouse.+PPD+levels+correlated+positively+with+parity+for+older+women+with+few+future+reproductive+opportunities%2C+as+predicted.+&rft.publisher=Elsevier&rft.contributor=Daly%2C+Martin&rft.contributor=Wilson%2C+Margo&rft.date=2002-09&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2470%2F1%2Fppd.pdf&rft.identifier=++Hagen%2C+Edward+H++(2002)+Depression+as+bargaining%3A+The+case+postpartum.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2470%2F