Arland Thornton (Cont'd.)(with Willard Rodgers). Changing Patterns <strong>of</strong> First Marriage in theUnited States. Demography22(2): 265-279 (May <strong>1985</strong>).Changing Attitudes Toward Separation and Divorce: Causes andConsequences, American Journal <strong>of</strong> Sociology 90(4): 856-872(January <strong>1985</strong>).Maxine Weinsteinfta:\(with James W- Wood). A Model <strong>of</strong> Age-Specific Fecundability. PSCResearch Report 86-101 (September 1986). Forthcoming in<strong>Population</strong> <strong>Studies</strong>.(with Arland Thornton). Mother-Child Relations and AdolescentSexual Attitudes and Behavior. PSC Research Report 86-100(September 1986).(with Karen Oppenheim Mason and Barbara Laslett). The Decline <strong>of</strong>Fertility in Los Angeles, California, 1880-1900. PSC ResearchReport85-83 (July <strong>1985</strong>). <strong>Population</strong> <strong>Studies</strong> 41(<strong>1987</strong>): 483-499.James W. Wood(with Maxine Weinstein). A Model <strong>of</strong> Age-Specific Fecundability.PSC Research Report86-101 (September 1986). Forthcoming in<strong>Population</strong> <strong>Studies</strong>.The Genetic Demography <strong>of</strong> the Gain] <strong>of</strong> Papua Guinea. III. Determinants<strong>of</strong> Hfective <strong>Population</strong> Size. PSCResearch Report 85-87(November <strong>1985</strong>).Convergence <strong>of</strong> Genetic Distances in a Migration Matrix Model. PSCResearch Report 85-81 (July <strong>1985</strong>)1.(with P. L. Johnson and K. L. Campbell). Demographic and EndocrinologicalAspects <strong>of</strong> Low Natural Fertility in Highland NewGuinea. Journal <strong>of</strong>Biosocial Science 17(l):57-79 (January <strong>1985</strong>).(with P. E. Smouse and J.C. Long). Sex-Specific Dispersal Patterns inTwo Human <strong>Population</strong>s <strong>of</strong> Highland New Guinea. The AmericanNaturalist 125(6):747-768 (June <strong>1985</strong>).(with D. Lai, P. L. Johnson, K. L. Campbell, and I. A. Maslar).Lactation and Birth-Spacing in Highland New Guinea. Journal <strong>of</strong>Biosocial Science, Supplement 9:159-173 (<strong>1985</strong>). Alsoappeared asPSC Research Report 85-72 (January <strong>1985</strong>).(with P. L. Johnson, K. L. Campbell, and I. A. Maslar). Long OvarianCycles in Women <strong>of</strong> Highland New Guinea. PSCResearch Report85-73 (January <strong>1985</strong>).RESEARCH FACILITIESLocated in an<strong>of</strong>fice building nearthe <strong>University</strong> <strong>of</strong><strong>Michigan</strong>'s main campus, the <strong>Center</strong> provides spaceand a full range <strong>of</strong> support services to the pr<strong>of</strong>essionalstaff. Facilities include <strong>of</strong>fices, computing equipment,a library, lounges, andconference rooms, and bothstaff and students spend most <strong>of</strong> their non-classroomtime here.SBCJ.farIn Nepal in 1986, Arland Thornton collects data for study on familystructure and fertilityin two mountain villages.In 1986, NICHD awarded the <strong>Center</strong> a five-yearrenewal <strong>of</strong> its core support services, testifying tothehigh regard <strong>of</strong> the Institutes and peer reviewers for thequality <strong>of</strong> the <strong>Center</strong>'s work. Core services thatsupport staff researchare administrative and secretarialsupport, data processing, library, and editorialassistance. Susan Etter, administrativeassociate, andher assistants provide administrative support tocurrent projectsas well as research under developmentand the training program. With the director andassociate directorfor training, she oversees dailyoperations and participates in long-range planning.Remote access equipment at the <strong>Center</strong> connectsover thirty terminals and microcomputersto the U-Mmainframe, an IBM 3090. The mainframe and itsoperating system, MTS, are particularly well suitedtosocial science computing. The <strong>Center</strong> has the capacityfor interactive processing <strong>of</strong> datasets containinghundreds <strong>of</strong> thousands <strong>of</strong> case records. Microcomputersare also employed bystaff andstudentsfor dataanalysis, word processing, and graphicsapplications.In addition to the printers attached to microcomputers,four network laser printers and a line printer allow foron-site retrieval <strong>of</strong> output. The <strong>Center</strong>'s data processingfacilities are headed by J. Michael Coble and AlbertAnderson.The growing number <strong>of</strong> data files fromprojects overthe years constitutes an importantresource forstaffand students. A new core unit funded by NICHD, thedata archive, has undertaken the documentation andarchiving<strong>of</strong> the <strong>Center</strong>'s data resources, a library <strong>of</strong>data files comprising 1,000 reels <strong>of</strong> magnetic tape.These data sets include a number <strong>of</strong> U. S. censussurvey files, World Fertility Surveys, the major nationalU. S. fertility surveys, KAP studies from developingResearch17
countries, and a number <strong>of</strong> other national samplesurveys. J. Michael Coble and Lisa J. Neidert direct thearchive.Another new core service added with funding underthe NICHD grant renewal is statistical consultation,under the direction <strong>of</strong> William M. Mason. Its missionis to facilitate substantive research by <strong>Center</strong> staff byidentifying statistical and design problems <strong>of</strong> particularprojects that would benefit from consultation withstatistical experts, both from the <strong>University</strong> <strong>of</strong> <strong>Michigan</strong>and other institutions. There has been intensivedevelopment <strong>of</strong> new statistical models valuable fordemographic research in recent years, and formalconsultation with outside experts is intended tocomplement the cross-project consulting on statisticalproblems that has characterized <strong>Center</strong> research in thepast.The reference collection at the <strong>Center</strong> serves the dataand research needs <strong>of</strong> staff members. At present itconsists <strong>of</strong> over 7,000 volumes, not including journals,United Nations publications, selected reprints, andforeign materials. Over half <strong>of</strong> the collection consists<strong>of</strong> volumes from the U. S. decennial censuses <strong>of</strong> 1880 to1980 and census reports. An extensive collection <strong>of</strong>working papers and reports by other centers is in the<strong>Center</strong>'s library also. Representing this specializedcollection is an on line subject classification systemwhich aids students and staff members in searching thelibrary's holdings for materials by author(s), subjects,title, geographical focus, and ethnic group. The <strong>Center</strong>librarian, Lois Groesbeck, aids staff and students usinglibrary resources and in accessing databases such asPOPLINE, MEDLARS, DIALOG, and the <strong>University</strong> <strong>of</strong><strong>Michigan</strong>'s library holdings.s\tThe <strong>Center</strong> disseminates results <strong>of</strong> its research bypublication and by making materials available tointerested colleagues. Periodical lists mailed to individuals,agencies, and institutions include reprints <strong>of</strong>published articles and Research Reports, a pre-publicationseries. Kathleen Duke manages the <strong>Center</strong>'spublications and communications and provideseditorial assistance to authors.The <strong>University</strong> <strong>of</strong> <strong>Michigan</strong>'s distinguished traditionin the behavioral and social sciences is reflected in itsinstitutional environment. A number <strong>of</strong> resourcesoutside the <strong>Center</strong> facilitate and enrich <strong>Center</strong> research,including the <strong>University</strong>'s library system whichcontains over six million holdings. Other centers andinstitutes affiliated with the university, such as theInstitute for Social Research and area centers such asthe <strong>Center</strong> for Asian <strong>Studies</strong>, are devoted to researchcomplementary to the <strong>Center</strong>'s work and enhanceinterdisciplinary contacts.y18 <strong>Population</strong> <strong>Studies</strong> <strong>Center</strong>