Lydia Vermeyden

University of Calgary · Faculty of Nursing

Adverse childhood experiences (ACEs) have been found to be associated with various health conditions; however, there is dearth of evidence on the relationship between ACEs and prenatal depression. This study was conducted to determine the association between overall ACE score and prenatal depression symptoms, assess the moderating effect of social...

Background Most evidence of the association between maternal depression and children’s development is limited by being cross-sectional. To date, few studies have modelled trajectories of maternal depressive symptoms from pregnancy through the early postpartum years and examined their association with social emotional and behavior functioning in pre...

Background: Pregnant women's perceptions of the risks and benefits during mental health screening impact their willingness to disclose concerns. Early research in violence screening suggests that such perceptions may vary by mode of screening, whereby women view the anonymity of e-screening as less risky than other approaches. Understanding whethe...

Background Major international guidelines recommend mental health screening during the perinatal period. However, substantial barriers to screening have been reported by pregnant and postpartum women and perinatal care providers. E-screening offers benefits that may address implementation challenges. Objective The primary objective of this randomi...

Weak measurement allows one to empirically determine a set of average trajectories for an ensemble of quantum particles. However, when two particles are entangled, the trajectories of the first particle can depend nonlocally on the position of the second particle. Moreover, the theory describing these trajectories, called Bohmian mechanics, predict...

Weak measurement allows one to empirically determine a set of average trajectories for an ensemble of quantum particles. However, when two particles are entangled, the trajectories of the first particle can depend nonlocally on the position of the second particle. Moreover, the theory describing these trajectories, called Bohmian mechanics, predict...

Background: A widely held concern of screening is that its psychological harms may outweigh the benefits of early detection and treatment. This study describes pregnant women's perceptions of possible harms and benefits of mental health screening and factors associated with identifying screening as harmful or beneficial. Methods: This study anal...

Access to mental health services during pregnancy is most commonly mobilized through formal mental health screening. However, few studies to date have identified barriers and facilitators that affect pregnant women's responses to mental health screening. The objective was to identify barriers and facilitators that influence pregnant women's respons...

The process of mental health screening can influence disclosure, uptake of referral, and treatment; however, no studies have explored pregnant women's views of methods of mental health screening. The objectives of this study are to determine pregnant women's comfort and preferences regarding mental health screening. Pregnant women were recruited (M...

Perinatal mental healthcare in Canada is characterized by under-diagnosis and under-treatment. Approaches to mental health screening can influence pregnant women’s uptake of treatment services. Objective To determine the acceptability of mental health screening in Canadian pregnant women. This cross-sectional survey used the Barriers and Facilitat...

Envariance, or environment-assisted invariance, is a recently identified symmetry for maximally entangled states in quantum theory with important ramifications for quantum measurement, specifically for understanding Born's rule. We benchmark the degree to which nature respects this symmetry by using entangled photon pairs. Our results show quantum...

The problem of using observed correlations to infer causal relations is relevant to a wide variety of scientific disciplines. Yet given correlations between just two classical variables, it is impossible to determine whether they arose from a causal influence of one on the other or a common cause influencing both, unless one can implement a randomi...

We measure, using weak measurement, the Bohmian trajectories of one photon that is part of an entangled pair. Our results shed light on the nonlocality of the Bohm model, as well as its so-called “surrealism.”

DOI:https://doi.org/10.1103/PhysRevA.87.039907

Bell’s inequalities are important to our understanding of quantum foundations and critical to several quantum technologies. A recent work [E. Wolfe and S. F. Yelin Phys. Rev. A 86 012123 (2012)] derived three parametrized families of two-particle, two-setting Bell inequalities. These inequalities are important as they theoretically explore a larger...