Family Conflict, Physical Symptoms, and Post Traumatic Stress among Sexual Minorities during the COVID Pandemic: A Moderated Mediation Model.

Sexual minorities experience health disparities compared to heterosexuals due to their stigmatized identies. The COVID- 19 pandemic has further exacerbated these disparities. Sexual minorities were surveyed about their experiences during the pandemic and asked about family conflict and minority stress as predictors of Post Traumatic Stress Symptoms (PTSS) and physical health symptoms, as well as psychological symptoms as a mediator of these relationships. We surveyed 435 sexual minorities who were recruited from Mechanical MTurk. Participants completed questionnaires that included demographics, PTSS in response to the pandemic, family conflict, minority stress, psychological symptoms, and physical health outcomes. Our findings support a moderated mediational model, explaining the relationships between family conflict, minority stress, PTSS and physical symptoms. Specifically, those participants who are high in minority stress are vulnerable to family conflict resulting in increased PTSS and physical symptoms. Psychological symptoms mediated these relationships.

Symmetry breaking analysis of prism adaptation's latent aftereffect.

The effect of prism adaptation on movement is typically reduced when the movement at test (prisms off) differs on some dimension from the movement at training (prisms on). Some adaptation is latent, however, and only revealed through further testing in which the movement at training is fully reinstated. Applying a nonlinear attractor dynamic model (Frank, Blau, & Turvey, 2009) to available data (Blau, Stephen, Carello, & Turvey, 2009), we provide evidence for a causal link between the latent (or secondary) aftereffect and an additive force term that is known to account for symmetry breaking. The evidence is discussed in respect to the hypothesis that recalibration aftereffects reflect memory principles (encoding specificity, transfer-appropriate processing) oriented to time-translation invariance-when later testing conserves the conditions of earlier training. Forgetting or reduced adaptation effects follow from the loss of this invariance and are reversed by its reinstatement.

Prism adaptation of underhand throwing: rotational inertia and the primary and latent aftereffects.

The effect of prism adaptation on movement is typically reduced when movement at test (with prisms removed) is different from movement at training. Previous research [J. Fernández-Ruiz, C. Hall-Haro, R. Díaz, J. Mischner, P. Vergara, J. C. Lopez-Garcia, Learning motor synergies makes use of information on muscular load, Learning & Memory 7 (2000) 193-198] suggests, however, that some adaptation is latent and only revealed through further testing in which the movement at training is fully reinstated. Movement in their training trials was throwing overhand to a vertical target with a mass attached to the arm. The critical test trials involved the same act initially without the attached mass and then with the attached mass. In replication, we studied throwing underhand to a horizontal target with left shifting prisms and a dissociation of the throwing arm's mass and moment of inertia. The two main results were that the observed latent aftereffect (a) depended on the similarity of training and test moments of inertia, and (b) combined with the primary aftereffect to yield a condition-independent sum. Discussion focused on a parallel between prism adaptation and principles governing recall highlighted in investigations of implicit memory: whether given training (study) conditions lead to good or poor persistence of adaptation (memory performance) at test depends on the conditions at test relative to the conditions at training (study).