Beck has written several articles regarding statistical analysis strategies and approaches to qualitative analysis strategies. Many in nursing will recognize the classic Polit and Hungler research text, a fixture in countless graduate nursing programs. Beck became coauthor of Polit’s seventh edition (Polit & Beck, 2003), reflecting Beck’s research expertise. Although Beck conducted seven major studies regarding educational and caring issues with undergraduate nursing students, for over three decades she has contributed to knowledge development in obstetrical nursing. Fittingly, her research career began by studying women in labor, examining their responses to fetal monitoring (Beck, 1980). Beck’s research focus eventually became the postpartum period and specific studies of postpartum mood disorders. This body of work has resulted in a substantive theory of postpartum depression (Beck, 1993) and the development of the Postpartum Depression Screening Scale (PDSS) (Beck, 2002c; Beck & Gable, 2000) and the Postpartum Depression Predictors Inventory (PDPI) (Beck, 1998, 2001, 2002b). A time line of Beck’s research is outlined in Table 34-1, demonstrating the logical progression of her work. Table 34-1 Time Line of Beck’s Perinatal Research Although Beck does not address caring as a theoretical or philosophical construct specific to her research, she has conducted several studies that evidence her belief that “caring is the essence of nursing” (Beck, 1999, p. 629). Beck’s use of the ideas of Jean Watson with regard to caring theory endorses caring as central to nursing, while acknowledging Watson’s concern that quantitative methodologies may not reflect adequately the ideal of transpersonal caring. It is obvious throughout Beck’s writings, including research reports using both quantitative and qualitative methods, that advancing nursing as a caring profession is desirable and achievable in practice, research, and education. Because many of the studies used to develop Beck’s Postpartum Depression Theory were qualitative in nature, various theoretical sources have been cited by Beck reflecting the philosophical and theoretical roots of methodologies that were important for the kind of knowledge developed in each study. Phenomenology was used in the first major study of how women experienced postpartum depression, using Colaizzi’s (1978) approach. In her next study, Beck used grounded theory as influenced by the theoretical and philosophical ideas of Glaser (1978), Glaser and Strauss (1967), and Hutchinson (1986). Throughout all of Beck’s work and consistent with feminist theory, there is explicit valuing of the importance of understanding pregnancy, birth, and motherhood through “the eyes of women” (Beck, 2002a). Furthermore, Beck acknowledges that childbirth occurs in many simultaneous contexts (medical, social, economic), and that mothers’ reactions to childbirth and motherhood are shaped by their responses to these contexts. An unusual theoretical source came from the work of Sichel and Driscoll (1999), who developed an earthquake model to conceptualize how interactions between biology and life result in what they term biochemical loading. Over time, with constant chemical challenges related to stressors, women’s brains may develop a kind of “fault line” that is less likely to remain intact during critical moments in women’s lives, such as the challenges women face around childbirth, resulting in a kind of “earthquake.” Beck understood Sichel and Driscoll’s model to “suggest that a woman’s genetic makeup, hormonal and reproductive history, and life experiences all combine to predict her risk of ‘an earthquake’ which occurs when her brain cannot stabilize and mood problems erupt” (Beck, 2001, p. 276). Although it is easy to understand the physiological and hormonal challenges of pregnancies for women, Sichel and Driscoll’s earthquake model was important in helping Beck holistically conceptualize the phenomena that might affect the development of postpartum depression for women. Although Beck states that she never experienced postpartum depression after the birth of her own children, those who have may relate to the earthquake metaphor complete with tremors culminating in postpartum depression or, worse, postpartum psychosis. Beck has identified Robert Gable as a particularly important source in her work. Now Professor Emeritus at the Neag School of Education, University of Connecticut, Gable coauthored an important text called Instrument Development in the Affective Domain (Gable & Wolf, 1993). After developing a wealth of knowledge about postpartum depression, the next logical steps for Beck became developing instruments that could predict and screen for postpartum depression. Gable assisted Beck with theoretical operationalization of her theory for practical use. Gable has remained directly involved through the step-by-step development of the PDSS, including the Spanish version (Beck & Gable, 2003). In 1993, after four major studies regarding women in the postpartum period (see Table 34-1), Beck developed a substantive theory of postpartum depression using grounded theory methodology. The substantive theory developed was entitled “teetering on the edge,” with the basic psychosocial problem identified as loss of control (Beck, 1993). Since development of the substantive theory, Beck has designed 14 other studies to refine the theory by examining the experiences of postpartum depression on mother-child interactions, postpartum panic, posttraumatic stress disorder (PTSD), and birth trauma to tease out differences among postpartum mood disorders (postpartum depression, maternity blues, postpartum psychosis, postpartum obsessive-compulsive disorder, postpartum-onset panic disorder). Meta-analyses were conducted on predictors of postpartum depression, the relationship between postpartum depression and infant temperament, and the effects of postpartum depression on mother-infant interaction. In addition, two qualitative meta-syntheses were conducted on postpartum depression and mothering multiples. Beck used ten qualitative studies of PPD in women from a wide variety of geographic locations and cultures. Women represented in these studies included Black Caribbean women, Irish women, Indian women, Hong Kong Chinese women, Hmong women, middle eastern women (living in the UK), Asian women, Portuguese women, Australian women, Canadian women, and African American women. These new data were used to compare Beck’s original teetering on the edge grounded theory with women in other cultures. Beck found that the theory’s modifiability was in keeping with theoretical expectations of a relevant substantive grounded theory. Therefore, the theory of “teetering on the edge,” with “loss of control” as the basic psychosocial process, has functionally expanded to women in other cultures (Beck, 2006a, 2007). The theoretical assertions within Beck’s theory are well represented throughout her writings. She acknowledges the importance of Sichel and Driscoll’s (1999) work related to the biological factors involved in postpartum depression in the following assertions: The brain can biochemically accommodate various stressors, whether related to internal biology or external events. Stressful events (internal or external), particularly over long periods, cause disruption of the biochemical regulation in the brain. The more insults to the brain, the more chronically deregulated the brain becomes. Because an already deregulated brain is again challenged with new stressors (internal or external), it is likely that serious mood and psychiatric disorders will result. Women’s unique and normal brain and hormonal chemistry result in a vulnerability to mood disorders at critical times in their lives, including after giving birth. Postpartum depression is caused by a combination of biological (including genetic), psychological, social, relational, economic, and situational life stressors. Postpartum depression is not a homogenous disorder. Women may express postpartum depression with a single symptom but are more likely to have a constellation of varying symptoms. This is related to varying life histories of internal and external stressors. Culturally, women are expected to feel happy, look happy, act happy, understand how to be a mother naturally, and experience motherhood with a sense of fulfillment. These expectations make it difficult for women to express genuine feelings of distress. The stigma attached to mental illness increases dramatically when a mental illness is related to the birth of a child, leading women to suffer in silence. Within a level of prevention framework, postpartum depression can be prevented through identification and mitigation of risk factors during the prepartum period. Postpartum depression can be identified early with careful screening and can be treated effectively. Prevention can alleviate months of suffering and decrease the harmful effects on women, their infants, and their families. A number of biological, sociological, and psychological issues and challenges are entirely normal in all pregnancies. These may include fatigue, sleep alterations, questioning one’s abilities, and the like. Comprehensive prenatal and postnatal care can eliminate troublesome pathological symptoms and help women normalize expected symptoms, thus reducing the degree of stress they actually experience.
Postpartum Depression Theory
CREDENTIALS AND BACKGROUND OF THE THEORIST
Year
Focus of Research
1972
Women’s cognitive and emotional responses to fetal monitoring (master’s thesis)
1977
Replication of master’s thesis
1982
Parturients’ temporal experiences during labor (doctoral dissertation)
1985
Mothers’ temporal experiences in postpartum period after vaginal and cesarean deliveries
1988
Postpartum temporal experiences of primiparas
1989
Incidence of maternity blues in primiparas and length of hospital stay
1990
Teetering on the edge: a grounded theory study of PPD
1992
The lived experience of PPD
1994
Nurses’ caring with postpartum depressed mothers
1995
Screening methods for PPD
1995
PPD and maternal-infant interaction
1995
Mothers with PPD perceptions of nurses’ caring
1996
The relationship between PPD and infant temperament
1996
Predictors of PPD meta-analysis
1996
Mothers with PPD and their experiences interacting with children
1996
Concept analysis of panic
1997
Developing research programs using qualitative and quantitative approaches
1998
Effects of PPD on child development
1998
Checklist to identify women at risk for PPD
1999
Maternal depression and child behavioral problems
2000
PDSS: development and psychometric testing
2001
Comparative analysis between PDSS and two other depression instruments
2001
Item response theory in affective instrument development
2001
Ensuring content validity
2002
PPD—metasynthesis
2002
Revision of PDPI
2002
Mothering multiples
2003
PPD in mothers of babies in NICU
2003
PDSS—Spanish version
2004
Birth trauma
2004
Posttraumatic stress disorder after childbirth
2004
Benefits of internet interviews
2005
DHA in pregnancy
2005
Birth trauma and breastfeeding
2005
Mapping birth trauma narratives
2007
PDSS-Internet
In progress
Subsequent childbirth after previous birth trauma
In progress
Mother’s caring for child with brachial plexus injury
In progress
PDSS—telephone version
THEORETICAL AND PHILOSOPHICAL SOURCES
USE OF EMPIRICAL EVIDENCE
THEORETICAL ASSERTIONS
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