David A. Wagstaff, PhD

Research Technologist

Upon receiving my undergraduate degree in Chemistry from Lafayette College, I entered the Army and served for five years.  During this period, I completed the Infantry Officer Basic Course, Airborne School, Special Forces Officer Course, Jungle School; completed a tour in the Republic of Vietnam; and returned to CONUS to complete the Chemical Officer Advance Course and the Military Intelligence Officer Advance Course.  When I was stationed at the John F. Kennedy Center for Military Assistance, my responsibilities covered civil-military and psychological operations.  This experience lead to my pursuing a doctorate in Psychology from the University of Massachusetts (Amherst).  Upon graduation, I worked as a programmer for a high altitude respiratory physiologist, for NOAA researchers who were studying how a tsunami would impact Hawaii, and subsequently for cancer researchers.

I have worked on prevention research projects funded by the National Cancer Institute (NCI), National Institute on Drug Abuse (NIDA), and National Institute on Mental Health (NIMH).  For most of this work, I have been a member of a small research team and have served in various roles to include substantive researcher, project manager, software programmer, and data analyst.  In 1982, as a research associate with the Community Cancer Program of Hawaii (CCPH), I supervised implementation of the statewide Health Awareness Survey; coordinated the data collection activities of CCPH and its subcontracted firms; analyzed the data and interpreted the survey findings; and organized and wrote the evaluation section for the final report to NCI.  From 1987 to 1991, I served as research associate for a smoking prevention intervention for school-age children and supervised the data collection\management activities for follow-up surveys that assessed the intervention's short- and long-term impacts.  In addition to writing software programs for data entry and verification, I conducted many of the project's outcome analyses.  From 1988 to 1992, I served as research associate for a prevention project designed to reduce the risk of repeat pregnancy among low-income, largely African American, primiparous teens.  In this capacity, I assisted with the study design and specification of the intervention's theoretical model; supervised the daily operations of the research team to include their data collection/management activities; and served as the project's data analyst (writing software programs for data entry/verification and participant tracking; and performing statistical analyses).  From 1991 to 1995, I and fellow pregnancy project team members conducted a STD prevention intervention for at-risk African American males seeking care at a municipal social hygiene clinic.  I again assisted with study design and specification of the intervention's underlying theoretical model; supervised the daily operations of the research team and their data collection and management activities; and served as the project's data analyst.  In developing the intervention in collaboration with the city’s health department and youth participating in a school program for students identified as at risk for school dropout, significant care was taken to ensure that the work was culturally- and age- appropriate.  From 1994 to 1997, I worked at the Center for AIDS Intervention Research (CAIR) where I was co-investigator for a multi-site, HIV/AIDS prevention intervention for at-risk, largely minority women who resided in public housing developments.  The intervention combined small-group, skills-building, cognitive-behavioral workshops with a series of community events planned, organized, and carried out by the female residents.  I monitored the daily operations of the site team; supervised their data collection and participant tracking activities; and served as one of the project's data analysts.  At CAIR, I also served as the data analyst for a HIV prevention intervention for homeless men and women. 

I have served as a statistical and methodological consultant to faculty and students since I arrived at Penn State in 1998.  I have also been fortunate enough to contribute to the researcher conducted by faculty and students in various departments across the University.  My current research interests include the analysis of experimental and observational data that exhibit statistical dependencies. 

Projects Joined


LIEBERMAN, J. A. Y. L., De Souza, M. Jane, Wagstaff, D. A., & Williams, N. I.. (2018). Menstrual Disruption with Exercise Is Not Linked to an Energy Availability Threshold. Medicine & Science in Sports & Exercise, 50(3), 551 - 561. presented at the Jan-01-2018. doi:10.1249/MSS.0000000000001451
Wilburne, J., Polly, D., Franz, D., & Wagstaff, D. A.. (2018). Mathematics teachers' implementation of high-leverage teaching practices: A Q-sort study. School Science and Mathematics, 118(6), 232 - 243. presented at the Jan-10-2018. doi:10.1111/ssm.2018.118.issue-610.1111/ssm.12293
Patterson, J. R., Brown, L. E., Wagstaff, D. A., & Sainburg, R. L.. (2017). Limb position drift results from misalignment of proprioceptive and visual maps. Neuroscience, 346, 382 - 394. presented at the Jan-03-2017. doi:10.1016/j.neuroscience.2017.01.040
Aronson, K. R., Wagstaff, D. A., Farace, E., Muscat, J., Belani, C., Almokadem, S., & Fossum, T.. (2016). A week in the life of lung cancer survivors: Daily reports of stress, worry, mood, and symptoms. Journal of Health Psychology, 21(10), 2269 - 2282. presented at the Jan-10-2016. doi:10.1177/1359105315574921
Miller, C. A., & Wagstaff, D. A.. (2011). Behavioral profiles associated with auditory processing disorder and specific language impairment. Journal of Communication Disorders, 44(6), 745 - 763. presented at the Jan-11-2011. doi:10.1016/j.jcomdis.2011.04.001
Elek, E., Wagstaff, D. A., & Hecht, M. L.. (2010). Effects of the 5th and 7th Grade Enhanced Versions of the Keepin' it Real Substance Use Prevention Curriculum. Journal of Drug Education, 405145447114474139320533820254922272054029371213034(1241), 61 - 79. presented at the Jan-03-2010. doi:10.2190/DE.40.1.e
Ndiaye, K., Hecht, M. L., Wagstaff, D. A., & Elek, E.. (2009). Mexican-Heritage Preadolescents' Ethnic Identification and Perceptions of Substance Use. Substance Use & Misuse, 44(8), 1160 - 1182. presented at the Sep-01-2010. doi:10.1080/10826080802544133
Wagstaff, D. A., Elek, E., Kulis, S., & Marsiglia, F.. (2009). Using a Nonparametric Bootstrap to Obtain a Confidence Interval for Pearson’s r with Cluster Randomized Data: A Case Study. The Journal of Primary Prevention, 30(5), 497 - 512. presented at the Jan-09-2009. doi:10.1007/s10935-009-0191-y
Wagstaff, D. A., Kulis, S., & Elek, E.. (2009). A Six-Wave Study of the Consistency of Mexican/Mexican American Preadolescents' Lifetime Substance Use Reports. Journal of Drug Education, 3953910824736211705820776252100112310232(4), 361 - 384. presented at the Jan-01-2009. doi:10.2190/DE.39.4.b
Wagstaff, D. A., Kranz, S., & Harel, O.. (2009). A preliminary study of active compared with passive imputation of missing body mass index values among non-Hispanic white youths. American Journal of Clinical Nutrition, 89(4), 1025 - 1030. presented at the Jan-04-2009. doi:10.3945/ajcn.2008.26995
Jimerson, S. R., Durbrow, E. H., & Wagstaff, D. A.. (2009). Academic and Behaviour Associates of Peer Status for Children in a Caribbean Community Findings from the St Vincent Child Study. School Psychology International, 305337201217531234226331632918286560285421712317562926721351590501121551134860102392028583466(2445462416444362932112331133213), 184 - 200. presented at the Jan-04-2009. doi:10.1177/0143034309104152
Eng, S., Wagstaff, D. A., & Kranz, S.. (2009). Eating late in the evening is associated with childhood obesity in some age groups but not in all children: the relationship between time of consumption and body weight status in U.S. children. International Journal of Behavioral Nutrition and Physical Activity, 6(1), 27. presented at the Jan-01-2009. doi:10.1186/1479-5868-6-27
Warren, J. R., Wagstaff, D. A., Hecht, M. L., & Elek, E.. (2008). The Effects of Mexican origin family structure on parental monitoring and pre‐adolescent substance use expectancies and substance use. Journal of Substance Use, 13(4), 283 - 292. presented at the Dec-01-2008. doi:10.1080/14659890802170745
Hecht, M. L., Elek, E., Wagstaff, D. A., Kam, J. A., Marsiglia, F., Dustman, P., et al.. (2008). Immediate and Short-Term Effects of the 5th Grade Version of the Keepin' it REAL Substance Use Prevention Intervention. Journal of Drug Education, 38(3), 225 - 251. presented at the Jan-01-2008. doi:10.2190/DE.38.3.c
Wagstaff, D. A., Korda, H., & McCleary, K. J.. (2008). African Americansʼ Organ Donor Intentions: Who has used which registration mode to express their intentions?. Journal of Public Health Management and Practice, 14(1), E7 - E13. presented at the Jan-01-2008. doi:10.1097/01.PHH.0000303420.83518.65
Hecht, M. L., Warren, J. R., Wagstaff, D. A., & Elek, E.. (2008). Substance Use, Resistance Skills, Decision Making, and Refusal Efficacy Among Mexican and Mexican American Preadolescents. Health Communication, 23(4), 349 - 357. presented at the Jul-08-2009. doi:10.1080/10410230802229720
Kranz, S., Lin, P. - J., & Wagstaff, D. A.. (2007). Children’s Dairy Intake in the United States: Too Little, Too Fat?. The Journal of Pediatrics, 151(6), 642 - 646.e2. presented at the Jan-12-2007. doi:10.1016/j.jpeds.2007.04.067
Korda, H., Wagstaff, D. A., & McCleary, K. J.. (2007). How African Americans Express Their Intentions to Be Organ Donors. Progress in Transplantation, 17162869533100521027455462(41114), 275 - 280. presented at the Jan-12-2007. doi:10.1177/152692480701700404
Marchand, J. F., Schedler, S., & Wagstaff, D. A.. (2004). The role of parents’ attachment orientations, depressive symptoms, and conflict behaviors in children’s externalizing and internalizing behavior problems. Early Childhood Research Quarterly, 19(3), 449 - 462. presented at the Jan-07-2004. doi:10.1016/j.ecresq.2004.07.003
Molls, R. R., Ahluwalia, N., Fick, T., Mastro, A. M., Wagstaff, D. A., Handte, G., & Ball, R.. (2003). Inter- and intra-individual variation in tests of cell-mediated immunity in young and old women. Mechanisms of Ageing and Development, 124(5), 619 - 627. presented at the Jan-05-2003. doi:10.1016/S0047-6374(03)00062-9
Hammer, C. Scheffner, Miccio, A. W., & Wagstaff, D. A.. (2003). Home Literacy Experiences and Their Relationship to Bilingual Preschoolers’ Developing English Literacy Abilities: An Initial Investigation. Language Speech and Hearing Services in Schools, 34(1), 20. presented at the Jan-01-2003. doi:10.1044/0161-1461(2003/003)
Durbrow, E. H., Wagstaff, D. A., & Turk, N.. (2002). Academic Standing, Peer Preference and Conduct in Caribbean Village Children: Are Good Scholars More Popular?. Psychology & Developing Societies, 14(2), 311 - 328. presented at the Jan-09-2002. doi:10.1177/097133360201400207
Cecil, H., Bogart, L., Wagstaff, D. A., Pinkerton, S., & Abramson, P.. (2002). Classifying a Person as a Sexual Partner: The Impact of Contextual Factors. Psychology & Health, 17(2), 221 - 234. presented at the Jan-01-2002. doi:10.1080/08870440290013699
Burns, E. A., Fleming, R., Wagstaff, D. A., Goodwin, J. S., Hirschman, R., & Greenberg, J. J.. (2002). Affective and Behavioral Stress Outcomes in Alzheimer's Caregivers. Journal of Applied Biobehavioral Research, 7(2), 65 - 74. presented at the Jan-07-2002. doi:10.1111/j.1751-9861.2002.tb00077.x
Bogart, L. M., Cecil, H., Wagstaff, D. A., Pinkerton, S. D., & Abramson, P. R.. (2000). Is it “Sex”?: College students' interpretations of sexual behavior terminology. Journal of Sex Research, 37(2), 108 - 116. presented at the Jan-05-2000. doi:10.1080/00224490009552027
Delamater, J., Wagstaff, D. A., & Havens, K. K.. (2000). The Impact of a Culturally Appropriate STD/AIDS Education Intervention on Black Male Adolescents' Sexual and Condom Use Behavior. Health Education & Behavior, 27(4), 454 - 470. presented at the Jan-08-2000. doi:10.1177/109019810002700408
Wagstaff, D. A., DeLamater, J. D., & Havens, K. Klein. (1999). Subsequent infection among adolescent African- American males attending a sexually transmitted disease clinic. Journal of Adolescent Health, 25(3), 217 - 226. presented at the Jan-09-1999. doi:10.1016/S1054-139X(99)00025-7
Pinkerton, S. D., Holtgrave, D. R., Leviton, L. C., Wagstaff, D. A., & Abramson, P. R.. (1998). Model-Based Evaluation of Hiv Prevention Interventions. Evaluation Review, 22(2), 155 - 174. presented at the Jan-04-1998. doi:10.1177/0193841X9802200201
Holtgrave, D. R., Leviton, L. C., Wagstaff, D. A., & Pinkerton, S. D.. (1997). Cumulative Probability of HIV Infection: A Summary Risk Measure for HIV Prevention Intervention Studies. AIDS and Behavior, 1(3), 169 - 172. presented at the Jan-09-1997. doi:10.1023/B:AIBE.0000002977.08417.5e
Sikkema, K. J., Heckman, T. G., Kelly, J. A., Anderson, E. S., Winett, R. A., Solomon, L. J., et al.. (1996). HIV risk behaviors among women living in low-income, inner-city housing developments. American Journal of Public Health, 86(8_Pt_1), 1123 - 1128. presented at the Jan-08-1996. doi:10.2105/AJPH.86.8_Pt_1.1123
Heckman, T. G., Sikkema, K. J., Kelly, J. A., Fuqua, R. W., Mercer, M. B., Hoffman, R. G., et al.. (1996). Predictors of Condom Use and Human Immunodeficiency Virus Test Seeking Among Women Living in Inner-City Public Housing Developments. Sexually Transmitted Diseases, 23(5), 357 - 365. presented at the Jan-01-1996. doi:10.1097/00007435-199609000-00003
Gilmore, S., DeLamater, J., & Wagstaff, D. A.. (1996). Sexual decision making by inner city black adolescent males: A focus group study. Journal of Sex Research, 33(4), 363 - 371. presented at the Jan-01-1996. doi:10.1080/00224499609551854
Myerson, J., Wagstaff, D. A., & Hale, S.. (1994). Brinley Plots, Explained Variance, and the Analysis of Age Differences in Response Latencies. Journal of Gerontology, 49(2), P72 - P80. presented at the Jan-03-1994. doi:10.1093/geronj/49.2.P72
Myerson, J., Hale, S., Wagstaff, D. A., Poon, L. W., & al, et. (1990). The information-loss model: A mathematical theory of age-related cognitive slowing. Psychological Review, 97(4), 475 - 487. presented at the Jan-01-1990. doi:10.1037/0033-295X.97.4.475
Hale, S., Myerson, J., & Wagstaff, D. A.. (1987). General Slowing of Nonverbal Information Processing: Evidence for a Power Law. Journal of Gerontology, 42(2), 131 - 136. presented at the Jan-03-1987. doi:10.1093/geronj/42.2.131
DE AMICIS, L. Y. N. A., Wagstaff, D. A., & CROMWELL, R. U. E. L.. (1986). Reaction Time Crossover as a Marker of Schizophrenia and of Higher Functioning. The Journal of Nervous and Mental Disease, 174(3), 177 - 179. presented at the Jan-01-1986. doi:10.1097/00005053-198603000-00010