DOI: 10.3886/icpsr21942.v6
title: NICHD Study of Early Child Care and Youth Development: Phase III, 2000-2004 [United States]
title: Version 6

description: The overall purpose of this study was to examine the influence of variations in early childcare histories on the psychological development of infants and toddlers from a variety of family backgrounds. This general objective was addressed through a prospective, longitudinal study of the experiences of 1,364 children and their families, which took into account the complex interactions among child characteristics and those of the human and physical environments in which the children were reared. Research Goals The specific research aims were as follows: Examining the relationship between infants' childcare arrangements (defined in terms of hours, type, quality, and stability of care and the age at which the child entered care) and children's concurrent and long-term development. Specifically, the study investigated the association between children's experiences in childcare and their social, emotional, language, and cognitive development. The social-emotional assessments included measures of attachment, independence, compliance, behavior problems, prosocial and antisocial behavior, and general competence in interacting with peers. Cognitive variables include general developmental level and problem solving skills. Language assessments incorporated measures of children's expressive and receptive communicative competence. Examining whether the social ecology of the home moderates the effects of childcare, i.e., whether children from different home environments are differentially affected by similar childcare experiences. The study examined the moderating effects of parents' values and attitudes, psychological adjustment and mental health, stress and social support, child-rearing practices, time use, interactions with the child, the marital relationship, and family demographics. Examining whether individual differences among children moderate the effects of infant care on child development. The study examined the moderating effects of such child characteristics as age, sex, health, birth order, and temperament. Identify demographic and family characteristics associated with families' childcare decisions. The study examined whether specific childcare arrangements are related to the parents' social class, marital status, psychological adjustment and personality, child-rearing values and attitudes, parenting practices, stress, social support, marital relationship, and the availability of childcare in the community. Provide a natural history of infant care in the 1990s, and help establish a baseline of data pertaining to the kinds of care being used by families. Whereas other national databases, such as those provided by the United States Census Bureau, provide static estimates of the number of children in different types of childcare, this network study supplements that knowledge with longitudinal data on successive enrollments into day care at various ages, patterns of arrangements used concurrently and over time, and the stability of arrangements during the first three years of life. One of the most valuable aspects of the collaborative study is the opportunity it provides to obtain a more complete and accurate picture of patterns of infant care used by families today. Census surveys use only gross categories of care (e.g., center vs. in-home). In this study, more fine-grained information regarding the types of centers and home-care facilities was gathered. Examine the consequences for families of maternal employment and childcare choices. Family relationships, parental mental health, family stress, and so on, are not just inputs to child development or moderators of childcare effects, they are also outcomes. High-quality childcare may alleviate family stress and enhance parental adjustment. Low-quality childcare may add to the stress parents experience. Although the main focus in the study was on the effect of childcare on the child, the study also examined the effect of childcare on the family. Identify demographic characteristics of childcare associated with childcare quality. Of interest to policy makers is another aspect of the study, the investigation of those regulatory characteristics that predict care of higher quality. These characteristics included the level and type of caregiver training, the size of the childcare group, the auspices of the childcare program (public/private, profit/nonprofit, independent/chain, employer-sponsored/church-based), whether the facility was licensed or unlicensed, the level of payment and fees, and whether the caregiver was a relative of the family. Data File Organization 504 data files were compiled for this study and are organized into 4 main groups: Analytical Data Sets (ADS) -- The raw data were examined and composites defined by small groups of individual principal investigators according to the demographic, family, childcare, and child outcome content of the data. The psychometric and distributional qualities of the variables along with site differences were examined. A set of variables that was psychometrically and distributionally acceptable to be used in analytic analyses was designed to test the study hypotheses. These data files comprise Parts 1-49 of the study data material. Supplemental Data Sets -- New and revised analysis variables as well as across-time mean scores and primary composites were produced as a supplement to the original Analytical Data Sets. These data files comprise Parts 50-55 of the study data material. Raw Census-Related Data Sets -- Files were produced using geocoded addresses for survey respondents to match block group level data from the 1990 and 2000 Censuses for investigators to create additional measures of interest from the geocoded addresses. These data files comprise Parts 56-58 of the study data material. Raw Data Sets -- The raw data were made available and comprise Parts 59-505 of the study data material. Training Workshop A three-day summer training workshop on the SECCYD was put on by NICHD at the Inter-University Consortium for Political and Social Research in Ann Arbor, Michigan in 2010. The binder from that workshop, which includes the Powerpoint slides used during presentations, are freely available to the public as part of the study documentation.
description: To examine the influence of variations in early childcare histories on the psychological development of infants and toddlers from a variety of family backgrounds.
description: The SECCYD is a multi-site, prospective, longitudinal study of the experiences of 1,364 children and their families. Respondents were sampled from a catchment of some 6,189 children. Children's development was assessed via trained observers, interviewers, questionnaires, and direct testing. Measures were taken on many facets of children's development, such as social, emotional, intellectual, and language development, behavioral problems and adjustment, and physical health. During Phase III of the study, data was collected from the study children, the study children's families, after-school caregivers, and teachers from the second through sixth grades. Data also were collected from friends of the study children and from their families and teachers at fourth and sixth grades. Prior to the start of formal schooling, data were collected on an age-based chronological schedule. With the onset of formal schooling, data were collected on a year-in-school basis. As a result, children who entered school in fall 1996, who accounted for 85 percent of the available sample, became Wave 1. The remaining 15 percent of the sample, who entered school in fall 1997, became Wave 2. However, annual Health and Physical Development Assessments (HPDA), which began when the study children were nine-and-a-half years old, continue on an age-related basis.
description: The 49 Analytical Data Sets (ADS) contain composite variables created from the raw data by Quantitative Systems Laboratory (QSL) at Vanderbilt University, to be psychometrically and distributionally acceptable for analytical analysis of the study hypotheses. The 6 Supplemental Data Sets were produced by Research Triangle Institute (RTI) and contain new and revised analysis variables, across-time mean scores, and primary composites. The 3 Raw Census Related Data Sets were produced using geocoded addresses for survey respondents to match block group- level data from the 1990 and 2000 Censuses, for investigators to create additional measures of interest from the geocoded addresses. The CENS1990 raw dataset contains 947 block group variables for 2,720 address records with start dates before January 1, 1996, for 1295 study children. The CENS2000 raw dataset contains 1,423 block group variables for 2,891 address records with end dates after December 31, 1995, for 1,159 study children. The 447 Raw Data Sets contain the direct item-level data collected per instrument.
description: Response Rates: During Phase I of the study (1991-1994), a cohort of 1,364 children and their families were recruited at 1 month of age and studied intensively through age 3. During Phase III of the study (2000-2004), a cohort of over 1,100 of the enrolled children and families were followed through sixth grade.
description: Presence of Common Scales: Student-Teacher Relationship Scale: Short Form Social Skills Rating Scale Middle Childhood H.O.M.E Child Behavior Checklist Child-Parent Relationship Scale: Short Form Child-Caregiver Rel. Scale: Short Form Girls' Pubertal Development Scale Boys' Pubertal Development Scale Woodcock-Johnson Cognitive Sub-tests Woodcock-Johnson Achievement Sub-tests Teacher Self Efficacy Scale Wechsler Abbreviated Scale of Intelligence (WASI) Peabody Picture Vocabulary Test - III (PPVT) H.O.M.E Inventory Scoring Multi Ethnic Identity Measure (MEIM) Multidimensional Inventory of Black Identity (MIBI) Woodcock Johnson-Revised Achievement Scale Woodcock Johnson-Revised Cognitive Scale COS Structural Scales COS Behavior Scales COS Qualitative Scales
description: Participants were selected in accordance with a conditionally random sampling plan, which was designed to ensure that the recruited families (a) included mothers who planned to work or to go to school full-time (60 percent) or part-time (20 percent) in the child's first year, as well as some who planned to say at home with the child (20 percent), and (b) reflected the demographic diversity (economic, educational, and ethnic) of the sites. Both two-parent and single-parent families were included. The major exclusionary criteria used were (a) mothers younger than 18 years of age at the time of the child's birth, (b) families who did not anticipate remaining in the catchment area for at least 3 years, (c) children with obvious disabilities at birth or who remained in the hospital more than 7 days postpartum, and (d) mothers not sufficiently conversant in English. Analyses have indicated that the data do reflect the natural distributions of these factors in the catchment. Therefore, inferences from this data can be made directly to the catchment without back-weighting for the sampling factors. In addition, analyses have shown that the NICHD data reflect to large degree the natural distributions of certain factors measured in the 1990 Census data. However, the NICHD data are not representative in the statistical sense, and therefore inference to the nation as a whole is not possible. Comparisons to other data bases, national or otherwise, should be made with extreme caution.
description: Datasets: DS0: Study-Level Files DS1: ADS-ASCAREG2 DS2: ADS-COUTG2 DS3: ADS-DEMOG2 DS4: ADS-SCHG2 DS5: ADS-TCHRG2 DS6: ADS-ASCAREG3 DS7: ADS-ASCGG3 DS8: ADS-COUTG3 DS9: ADS-DEMOG3 DS10: ADS-FAMG3 DS11: ADS-HPAG3 DS12: ADS-SCHG3 DS13: ADS-TCHRG3 DS14: ADS-ASCAREG4 DS15: ADS-ASCGG4 DS16: ADS-COUTG4 DS17: ADS-DEMOG4 DS18: ADS-FAMG4 DS19: ADS-FRDEMOG4 DS20: ADS-FRFAMG4 DS21: ADS-FROUTG4 DS22: ADS-FRSCHG4 DS23: ADS-FRTCHRG4 DS24: ADS-HPAG4 DS25: ADS-SCHG4 DS26: ADS-TCHRG4 DS27: ADS-ASCAREG5 DS28: ADS-ASCGG5 DS29: ADS-COUTG5 DS30: ADS-DEMOG5 DS31: ADS-FAMG5 DS32: ADS-HPAG5 DS33: ADS-SCHG5 DS34: ADS-TCHRG5 DS35: ADS-ASCAREG6 DS36: ADS-COUTG6 DS37: ADS-DEMOG6 DS38: ADS-FAMG6 DS39: ADS-FRDEMOG6 DS40: ADS-FRFAMG6 DS41: ADS-FROUTG6 DS42: ADS-FRSCHG6 DS43: ADS-FRTCHRG6 DS44: ADS-HPAG6 DS45: ADS-SCHG6 DS46: ADS-TCHRG6 DS47: ADS-BMIHIST DS48: ADS-RESHIST DS49: ADS-SCHHIST DS50: Supplemental-FPA07G3B DS51: Supplemental-FPA07G5B DS52: Supplemental-FPA07G6B DS53: Supplemental-REVPAMG3 DS54: Supplemental-REVPAMG5 DS55: Supplemental-REVPAMG6 DS56: Census-ACTV1MX5 DS57: Census-CENS1990 DS58: Census-CENS2000 DS59: RAW-AS2FS_A DS60: RAW-FG2FA DS61: RAW-FG2SA DS62: RAW-FPH2C DS63: RAW-FSV10G2 DS64: RAW-FSV11G2 DS65: RAW-FSV12G2 DS66: RAW-FSV13G2 DS67: RAW-FSV14G2 DS68: RAW-FSV4G2_A DS69: RAW-FSV5G2 DS70: RAW-FSV6G2_A DS71: RAW-FSV7G2 DS72: RAW-FSV8G2_A DS73: RAW-FSV9G2 DS74: RAW-HH2FS_A DS75: RAW-FAC01G3A DS76: RAW-FAP01G3B DS77: RAW-FAS01G3 DS78: RAW-FAS02G3A DS79: RAW-FAS03G3A DS80: RAW-FAS04G3 DS81: RAW-FAS05G3 DS82: RAW-FAS06G3 DS83: RAW-FG3FA DS84: RAW-FHV01G3 DS85: RAW-FHV04G3 DS86: RAW-FHV05G3 DS87: RAW-FHV06G3A DS88: RAW-FHV08G3 DS89: RAW-FHV09G3 DS90: RAW-FHV10G3 DS91: RAW-FHV11G3A DS92: RAW-FHV12G3A DS93: RAW-FHV13G3 DS94: RAW-FHV14G3A DS95: RAW-FHV15G3 DS96: RAW-FHV16G3 DS97: RAW-FHV17G3 DS98: RAW-FHV18G3 DS99: RAW-FHV19G3 DS100: RAW-FHV20G3 DS101: RAW-FHV21G3 DS102: RAW-FHV22G3 DS103: RAW-FHV23G3 DS104: RAW-FHV24G3 DS105: RAW-FHV25G3 DS106: RAW-FHV26G3A DS107: RAW-FHV27G3 DS108: RAW-FHV28G3A DS109: RAW-FHV29G3 DS110: RAW-FHV30G3 DS111: RAW-FHV31G3 DS112: RAW-FHV32G3 DS113: RAW-FHV33G3 DS114: RAW-FHV34G3 DS115: RAW-FHV35G3 DS116: RAW-FHV36G3 DS117: RAW-FHV37G3 DS118: RAW-FHV38G3 DS119: RAW-FHV39G3 DS120: RAW-FHV40G3 DS121: RAW-FHV41G3A DS122: RAW-FHV42G3A DS123: RAW-FLV01G3A DS124: RAW-FLV02G3A DS125: RAW-FLV04G3 DS126: RAW-FLV05G3 DS127: RAW-FLV06G3 DS128: RAW-FLV07G3 DS129: RAW-FLV08G3 DS130: RAW-FLV11G3 DS131: RAW-FLV13G3A DS132: RAW-FLV14G3A DS133: RAW-FLV15G3 DS134: RAW-FLV16G3 DS135: RAW-FLV17G3 DS136: RAW-FLV18G3 DS137: RAW-FLV19G3 DS138: RAW-FLV20G3 DS139: RAW-FLV21G3 DS140: RAW-FLV22G3 DS141: RAW-FLV23G3 DS142: RAW-FLV24G3 DS143: RAW-FLV25G3 DS144: RAW-FLV26G3 DS145: RAW-FLV27G3 DS146: RAW-FLV28G3 DS147: RAW-FPA01G3 DS148: RAW-FPA03G3 DS149: RAW-FPA06G3 DS150: RAW-FPA07G3A DS151: RAW-FSV01G3A DS152: RAW-FSV02G3 DS153: RAW-FSV03G3 DS154: RAW-FSV05G3 DS155: RAW-FSV06G3 DS156: RAW-FSV07G3 DS157: RAW-FSV08G3 DS158: RAW-FSV09G3 DS159: RAW-FSV10G3 DS160: RAW-FSV11G3A DS161: RAW-FSV12G3 DS162: RAW-FSV13G3A DS163: RAW-FSV14G3 DS164: RAW-FSV15G3 DS165: RAW-FSV16G3A DS166: RAW-FSV17G3A DS167: RAW-FSV19G3 DS168: RAW-FSV20G3 DS169: RAW-HH3F_A DS170: RAW-JB3F_A DS171: RAW-FAC01G4A DS172: RAW-FAP01G4A DS173: RAW-FAS01G4 DS174: RAW-FAS02G4A DS175: RAW-FAS03G4A DS176: RAW-FAS04G4 DS177: RAW-FAS05G4 DS178: RAW-FAS06G4 DS179: RAW-FCPTG4 DS180: RAW-FG4FA DS181: RAW-FLV01G4 DS182: RAW-FLV05G4 DS183: RAW-FLV06G4B DS184: RAW-FLV07G4A DS185: RAW-FLV08G4 DS186: RAW-FLV09G4A DS187: RAW-FLV10G4 DS188: RAW-FLV11G4A DS189: RAW-FLV12G4 DS190: RAW-FLV13G4 DS191: RAW-FLV14G4 DS192: RAW-FLV15G4 DS193: RAW-FLV16G4 DS194: RAW-FLV17G4 DS195: RAW-FLV18G4 DS196: RAW-FLV19G4 DS197: RAW-FLV20G4 DS198: RAW-FLV21G4 DS199: RAW-FLV22G4A DS200: RAW-FLV23G4 DS201: RAW-FLV24G4A DS202: RAW-FLV25G4 DS203: RAW-FLV26G4 DS204: RAW-FLV27G4 DS205: RAW-FLV28G4 DS206: RAW-FLV29G4 DS207: RAW-FLV2FG4 DS208: RAW-FLV2SG4 DS209: RAW-FLV30G4 DS210: RAW-FLV31G4 DS211: RAW-FLV32G4 DS212: RAW-FLV33G4A DS213: RAW-FLV34G4 DS214: RAW-FLV35G4 DS215: RAW-FLV36G4 DS216: RAW-FLV37G4 DS217: RAW-FLV38G4 DS218: RAW-FLV39G4 DS219: RAW-FLV3FG4 DS220: RAW-FLV3SG4 DS221: RAW-FLV4FG4 DS222: RAW-FLV4SG4 DS223: RAW-FPD01G4 DS224: RAW-FPD02G4 DS225: RAW-FPD03G4 DS226: RAW-FPD04G4 DS227: RAW-FPD05G4 DS228: RAW-FPD06G4 DS229: RAW-FPD08G4 DS230: RAW-FPD11G4 DS231: RAW-FSA01G4 DS232: RAW-FSF24G4 DS233: RAW-FSV04G4 DS234: RAW-FSV05G4 DS235: RAW-FSV06G4 DS236: RAW-FSV07G4 DS237: RAW-FSV08G4A DS238: RAW-FSV09G4 DS239: RAW-FSV10G4A DS240: RAW-FSV11G4 DS241: RAW-FSV12G4 DS242: RAW-FSV13G4 DS243: RAW-FSV14G4 DS244: RAW-FSV15G4 DS245: RAW-FSV16G4A DS246: RAW-FSV17G4 DS247: RAW-FSV18G4A DS248: RAW-FSV19G4 DS249: RAW-FSV20G4 DS250: RAW-FSV21G4 DS251: RAW-FSV22G4A DS252: RAW-FSV23G4A DS253: RAW-FSV24G4 DS254: RAW-FSV25G4 DS255: RAW-HH4F_A DS256: RAW-JB4F_A DS257: RAW-FAC01G5A DS258: RAW-FAP01G5A DS259: RAW-FAS01G5 DS260: RAW-FAS02G5A DS261: RAW-FAS03G5A DS262: RAW-FAS04G5 DS263: RAW-FAS05G5 DS264: RAW-FAS06G5 DS265: RAW-FG5SA DS266: RAW-FHV01G5 DS267: RAW-FHV02G5 DS268: RAW-FHV03G5 DS269: RAW-FHV04G5 DS270: RAW-FHV05G5 DS271: RAW-FHV06G5 DS272: RAW-FHV07G5 DS273: RAW-FHV08G5 DS274: RAW-FHV09G5 DS275: RAW-FHV10G5 DS276: RAW-FHV11G5A DS277: RAW-FHV12G5 DS278: RAW-FHV13G5 DS279: RAW-FHV14G5 DS280: RAW-FHV15G5A DS281: RAW-FHV16G5 DS282: RAW-FHV17G5 DS283: RAW-FHV18G5A DS284: RAW-FHV19G5 DS285: RAW-FHV20G5 DS286: RAW-FHV21G5 DS287: RAW-FHV22G5 DS288: RAW-FHV23G5 DS289: RAW-FHV24G5 DS290: RAW-FHV25G5 DS291: RAW-FHV26G5A DS292: RAW-FHV27G5 DS293: RAW-FHV28G5 DS294: RAW-FHV29G5A DS295: RAW-FHV30G5 DS296: RAW-FHV31G5 DS297: RAW-FHV32G5 DS298: RAW-FHV33G5 DS299: RAW-FHV34G5 DS300: RAW-FHV35G5 DS301: RAW-FHV36G5 DS302: RAW-FHV37G5 DS303: RAW-FHV38G5 DS304: RAW-FHV39G5 DS305: RAW-FHV40G5 DS306: RAW-FHV41G5 DS307: RAW-FHV42G5 DS308: RAW-FHV43G5A DS309: RAW-FHV44G5A DS310: RAW-FLV01G5 DS311: RAW-FLV02G5A DS312: RAW-FLV03G5A DS313: RAW-FLV04G5C DS314: RAW-FLV05G5 DS315: RAW-FLV06G5A DS316: RAW-FLV07G5B DS317: RAW-FLV08G5 DS318: RAW-FLV09G5 DS319: RAW-FLV10G5 DS320: RAW-FLV11G5 DS321: RAW-FLV12G5 DS322: RAW-FLV13G5 DS323: RAW-FLV14G5 DS324: RAW-FLV15G5 DS325: RAW-FLV16G5 DS326: RAW-FLV17G5 DS327: RAW-FLV18G5A DS328: RAW-FLV20G5 DS329: RAW-FLV21G5 DS330: RAW-FLV22G5 DS331: RAW-FLV23G5 DS332: RAW-FLV24G5 DS333: RAW-FLV25G5 DS334: RAW-FLV26G5 DS335: RAW-FLV27G5 DS336: RAW-FLV28G5 DS337: RAW-FLV29G5 DS338: RAW-FLV30G5 DS339: RAW-FLV31G5 DS340: RAW-FLV32G5 DS341: RAW-FLV33G5 DS342: RAW-FLV34G5 DS343: RAW-FLV35G5 DS344: RAW-FLV36G5 DS345: RAW-FLV37G5A DS346: RAW-FLV38G5A DS347: RAW-FPA01G5 DS348: RAW-FPA03G5 DS349: RAW-FPA06G5 DS350: RAW-FPA07G5A DS351: RAW-FPD01G5 DS352: RAW-FPD02G5 DS353: RAW-FPD03G5 DS354: RAW-FPD04G5 DS355: RAW-FPD05G5 DS356: RAW-FPD06G5 DS357: RAW-FPD08G5 DS358: RAW-FPD11G5 DS359: RAW-FSA01G5 DS360: RAW-FSV01G5A DS361: RAW-FSV02G5 DS362: RAW-FSV03G5 DS363: RAW-FSV05G5 DS364: RAW-FSV06G5 DS365: RAW-FSV07G5 DS366: RAW-FSV08G5 DS367: RAW-FSV09G5 DS368: RAW-FSV10G5 DS369: RAW-FSV11G5A DS370: RAW-FSV12G5 DS371: RAW-FSV13G5A DS372: RAW-FSV14G5 DS373: RAW-FSV15G5 DS374: RAW-FSV16G5 DS375: RAW-FSV17G5A DS376: RAW-FSV18G5A DS377: RAW-FSV20G5 DS378: RAW-FSV21G5 DS379: RAW-HH5S_A DS380: RAW-JB5S_A DS381: RAW-FLV01G6 DS382: RAW-FLV02G6 DS383: RAW-FLV03G6 DS384: RAW-FLV04G6 DS385: RAW-FLV05G6A DS386: RAW-FLV07G6 DS387: RAW-FLV07G6F DS388: RAW-FLV08G6 DS389: RAW-FLV08G6F DS390: RAW-FLV09G6 DS391: RAW-FLV09G6F DS392: RAW-FLV10G6 DS393: RAW-FLV10G6F DS394: RAW-FLV11G6 DS395: RAW-FLV11G6F DS396: RAW-FLV12G6 DS397: RAW-FLV12G6F DS398: RAW-FLV13G6 DS399: RAW-FLV14G6 DS400: RAW-FLV14G6F DS401: RAW-FLV15G6 DS402: RAW-FLV15G6F DS403: RAW-FLV16G6 DS404: RAW-FLV16G6F DS405: RAW-FLV17G6 DS406: RAW-FLV17G6F DS407: RAW-FLV18G6 DS408: RAW-FLV19G6 DS409: RAW-FLV20G6 DS410: RAW-FLV20G6F DS411: RAW-FLV21G6 DS412: RAW-FLV21G6F DS413: RAW-FLV22G6 DS414: RAW-FLV22G6F DS415: RAW-FLV23G6 DS416: RAW-FLV23G6F DS417: RAW-FLV24G6 DS418: RAW-FLV24G6F DS419: RAW-FLV25G6 DS420: RAW-FLV26G6 DS421: RAW-FLV27G6 DS422: RAW-FLV28G6 DS423: RAW-FLV29G6 DS424: RAW-FLV30G6 DS425: RAW-FLV31G6 DS426: RAW-FLV32G6 DS427: RAW-FLV33G6 DS428: RAW-FLV34G6A DS429: RAW-FLV35G6 DS430: RAW-FLV36G6 DS431: RAW-FLV37G6A DS432: RAW-FLV38G6 DS433: RAW-FLV39G6 DS434: RAW-FLV40G6 DS435: RAW-FLV41G6 DS436: RAW-FLV42G6 DS437: RAW-FLV43G6 DS438: RAW-FLV44G6 DS439: RAW-FLV45G6 DS440: RAW-FLV46G6A DS441: RAW-FLV47G6 DS442: RAW-FLV48G6A DS443: RAW-FLV49G6 DS444: RAW-FLV50G6 DS445: RAW-FLV51G6 DS446: RAW-FLV52G6 DS447: RAW-FLV53G6 DS448: RAW-FLV54G6 DS449: RAW-FLV55G6 DS450: RAW-FLV56G6A DS451: RAW-FLV57G6 DS452: RAW-FLV58G6A DS453: RAW-FLV59G6 DS454: RAW-FLV60G6 DS455: RAW-FLV61G6 DS456: RAW-FLV62G6 DS457: RAW-FLV63G6B DS458: RAW-FLV64G6 DS459: RAW-FPA01G6 DS460: RAW-FPA06G6 DS461: RAW-FPA07G6A DS462: RAW-FPD01G6 DS463: RAW-FPD02G6 DS464: RAW-FPD03G6 DS465: RAW-FPD04G6 DS466: RAW-FPD05G6 DS467: RAW-FPD06G6 DS468: RAW-FPD08G6 DS469: RAW-FPD11G6 DS470: RAW-FSA01G6 DS471: RAW-FSF12G6 DS472: RAW-FSV01G6 DS473: RAW-FSV02G6 DS474: RAW-FSV03G6 DS475: RAW-FSV04G6 DS476: RAW-FSV05G6A DS477: RAW-FSV06G6 DS478: RAW-FSV07G6A DS479: RAW-FSV08G6 DS480: RAW-FSV09G6 DS481: RAW-FSV10G6A DS482: RAW-FSV11G6A DS483: RAW-FSV12G6 DS484: RAW-FSV13G6 DS485: RAW-FSV14G6 DS486: RAW-FSV15G6 DS487: RAW-FSV16G6 DS488: RAW-FSV17G6A DS489: RAW-FSV18G6 DS490: RAW-FSV19G6A DS491: RAW-FSV20G6 DS492: RAW-FSV21G6 DS493: RAW-HH6F_A DS494: RAW-JB6F_A DS495: RAW-BMIGRID DS496: RAW-NCES9603 DS497: RAW-SCKFG6_B DS498: RAW-FALT2 DS499: RAW-FALT3 DS500: RAW-FG2M_A DS501: RAW-FG3M_A DS502: RAW-FG4M_A DS503: RAW-FG5M_A DS504: RAW-FPH3R DS505: RAW-FG6FA
description: Full-term, healthy newborns of mothers giving birth in hospitals at 10 locations throughout the United States during designated 24-hour periods between January and November 1991.
description: computer-assisted personal interview (CAPI); computer-assisted telephone interview (CATI); coded on-site observation; cognitive assessment test; face-to-face interview; mail questionnaire; self-enumerated questionnaire; on-site questionnaire; telephone interviewData are available for the other phases of the NICHD Study of Early Child Care and Youth Development (SECCYD) Series. See: SECCYD Phase I, 1991-1994 (ICPSR 21940), SECCYD Phase II, 1995-1999 (ICPSR 21941), and SECCYD Phase IV, 2005-2007 (ICPSR 22361).<strong>User Alert for All Phase III NCES Raw Data Files</strong> The variable ID in the files listed below has a numeric instead of character format. In order to merge data from these datasets with data from other non-Phase-3-NCES-Raw datasets, the ID variable needs to be converted to a character format: 21942\Data\Raw\ASCII\da21942-0496_Raw-NCES9603.txt 21942\Data\Raw\ASCII\da21942-0496_Raw-NCES9603.tsv 21942\Data\Raw\SAS\da21942-0496_Raw-NCES9603.stc 21942\Data\Raw\SAS\set21942-0496_Raw-NCES9603.sas 21942\Data\Raw\SAS\ssf21942-0496_Raw-NCES9603.sas 21942\Data\Raw\SPSS\da21942-0496_Raw-NCES9603.sav 21942\Data\Raw\SPSS\set21942-0496_Raw-NCES9603.sps 21942\Data\Raw\STATA\da21942-0496_Raw-NCES9603.dta 21942\Data\Raw\STATA\set21942-0496_Raw-NCES9603.do 21942\Data\Raw\STATA\ssf21942-0496_Raw-NCES9603.do 21942\Data\Raw\STATA\set21942-0496_Raw-NCES9603.dctThe NICHD Study of Early Child Care and Youth Development was conducted by a network of investigators called the NICHD Early Child Care Research Network. The network was led and managed by a steering committee that included an independent chairperson, one representative from each of the grantee sites, one representative from the data center, and one representative from NICHD. The steering committee established policies and procedures that governed the operations of the network. The progress of the study was monitored by NICHD and by the steering committee with guidance from an advisory board which was nominated by the director of NICHD.