Using Response Times for Joint Modeling of Response and Omission Behavior

Abstract

For adequate modeling of missing responses, a thorough understanding of the nonresponse mechanisms is vital. As a large number of major testing programs are in the process or already have been moving to computer-based assessment, a rich body of additional data on examinee behavior becomes easily accessible. These additional data may contain valuable information on the processes associated with nonresponse. Bringing together research on item omissions with approaches for modeling response time data, we propose a framework for simultaneously modeling response behavior and omission behavior utilizing timing information for both. As such, the proposed model allows (a) to gain a deeper understanding of response and nonresponse behavior in general and, in particular, of the processes underlying item omissions in LSAs, (b) to model the processes determining the time examinees require to generate a response or to omit an item, and (c) to account for nonignorable item omissions. Parameter recovery of the proposed model is studied within a simulation study. An illustration of the model by means of an application to real data is provided.     

Coping Card Usage can Further Reduce Suicide Reattempt in Suicide Attempter Case Management Within 3‐Month Intervention

This randomized controlled trial was designed to evaluate the effectiveness of using crisis coping cards (n = 32) in the case management of suicide prevention compared with case management without the use of coping cards (n = 32) over a 3‐month intervention period. The generalized estimating equation was used to examine the interaction effect between treatments and time on suicide risk, depression, anxiety, and hopelessness. Results indicated that subsequent suicidal behaviors, severity of suicide risk, depression, anxiety, and hopelessness were reduced more in the coping card intervention group compared to the case management only group. Moreover, for the survival curves of time to suicide reattempt, the coping card group showed a significantly longer time to reattempt than the case management only group at 2‐month and 3‐month intervention periods.     

Spaceship Archeology: Methodological Experiments in NSF Counter-Insurgency at the 2017 Oregon Eclipse Festival

Abstract

This article examines several aspects of knowledge production among practitioners of 21st century capitalism, critiquing the motivations, funding, methods, and dissemination of today’s politically and economically dominant epistemology. We document a methodological experiment undertaken during the Oregon Eclipse Festival—a week-long event coinciding with the solar eclipse that crossed the United States on August 21, 2017. As commissioned participants in the festival’s Art & Science exhibit, we designed an interactive archeological excavation that sought to produce material evidence corroborating the (un)reality of UFO activity in Oregon. From this performance, we highlight four insights into the relationship between science, evidence, and responsibility.     

Suicidality Among Gay and Bisexual Men in Taiwan: Its Relationships with Sexuality and Gender Role Characteristics,Homophobic Bullying Victimization,and Social Support

This study aimed to examine the associations of suicidality in emerging adulthood with time of coming out, gender role nonconformity, sexual orientation, traditional and cyber homophobic bullying victimization, and family and peer support during childhood in gay and bisexual men in Taiwan. The frequency of “experiencing suicide ideation” and “attempting suicide” in the past year among 500 gay or bisexual men was examined. The participants’ time of coming out, level of subjective masculinity, sexual orientation, experiences of traditional and cyber homophobic bullying victimization, and levels of family and peer support during childhood were also evaluated. In total, 31% (n = 155) of participants reported experiencing suicide ideation (n = 82) or attempting suicide (n = 73). Early coming out, traditional homophobic bullying victimization, and low family support during childhood increased the risk of suicidality in emerging adulthood; by contrast, family support did not moderate the association of early coming out or traditional bullying victimization with current suicidality. A high proportion of participants reported experiencing suicide ideation and attempt in emerging adulthood. Hence, effective suicide prevention is required for gay and bisexual men. Suicide prevention programs should consider time of coming out, traditional homophobic bullying victimization, and level of family support.     

Why Do Firms Implement Responsible Innovation? The Case of Emerging Technologies in South Korea

Science and Engineering Ethics - With the rise of responsible innovation (RI) initiatives in firms that commercialize innovation in recent years, experts have argued that in order for RI to...