Teaching Engineering Ethics by Conceptual Design: The Somatic Marker Hypothesis

In 1998, a lead researcher at a Midwestern university submitted as his own a document that had 64 instances of strings of 10 or more words that were identical to a consultant’s masters thesis and replicated a data chart, all of whose 16 entries were identical to three and four significant figures. He was fired because his actions were wrong. Curiously, he was completely unable to see that his actions were wrong. This phenomenon is discussed in light of recent advances in neuroscience and used to argue for a change in the standard way engineering ethics is taught. I argue that engineering ethics is better taught in the form of a design course in order to maximize “somatic” learning.     

The implications of imperfect measurement for free-choice carry-over effects: Reply to M. Keith Chen’s (2008) “Rationalization and cognitive dissonance: Do choices affect or reflect preferences?”

Examinations of post-choice decision-making behavior often involve two successive choices. At time 1, participants choose between two equally attractive items. At time 2, participants choose between the unchosen item from time 1 and a new item that is roughly equal in attractiveness to the other two. The option rejected at time 1 will tend to again be rejected at time 2, a tendency often attributed to a psychological carry-over effect. Chen (2008) (Available from: http://cowles.econ.yale.edu/P/cd/d16b/d1669.pdf) discounts these psychological explanations. He argues that, given the time 1 choice, there is, in fact, a baserate probability of 66.7% that the initially unchosen item will be rejected again at time 2. However, Chen’s argument rests on the unwarranted assumption that the time 1 choice provides a perfectly reliable measure of subjects’ preference for the chosen item over the unchosen item. With more realistic estimates of the association between preference and choice, Chen’s statistical explanation cannot fully account for the carry-over effect. Alternative experimental methodologies that eliminate Chen’s statistical explanation are discussed.     

In pursuit of the proper null: Reply to

Chen argued that the proper null hypothesis for free-choice studies examining shifts in choice was 66.7%. Sagarin and Skowronki (2009) questioned the appropriateness of this value, noting that it was based on an unwarranted assumption that subjects always choose preferred options over less preferred options. In this paper, we respond to the points raised by Chen and Risen (2009), noting that: (a) violations of an additional unwarranted assumption (perfect transitivity) also move the proper null hypothesis towards 50%; (b) the validation of pretest measures would enable researchers to estimate an upper bound on the proper null; (c) the “blind” choice methodology proposed by Sagarin and Skowronski places the null unambiguously at 50%; and (d) Sagarin and Skowronski correctly call for null-hypothesis tests where needed. In the end, we again endorse the idea that this debate is best resolved empirically, but we believe the empirical avenues available are wider than those endorsed by Chen and Risen.     

Structural alterations of an ambiguous musical figure: The scale illusion revisited

The scale illusion (Deutsch, 1975) shows the importance of frequency range in the perceptual organization of a sequence of notes. This paper includes three experiments on the scale illusion. Experiments 1 and 2 demonstrated that if the structure of the pattern of notes used in the original scale illusion study is altered slightly, by adding or subtracting a pair of notes from the ends of the sequence, there is a significant decrease in the rate of frequency-based responses, suggesting a weaker illusion. Experiment 3 investigated two features of the note patterns that may have led to this change. Specifically, it asked whether the decrease in the strength of the illusion is due to (1) the nature of the notes at the extremes of the frequency range and/or (2) the nature of the notes at the crossing point of the two scales. While both sources were found to affect the strength of the scale illusion, the former had a greater influence.     

Parallels Between Near-Death Experience Prophetic Visions and Prophecies from the Bible and Mormon Holy Writ

In 1982, Kenneth Ring identified a phenomenon where some near-death experiencers were permitted to see a picture of the Earth's future as a prophetic vision or PV. In his study of the PV, Ring identified five elements of the PV for the future of the Earth as geophysical changes, meteorological changes, supply and economic breakdowns, nuclear war, and a new era of love and world peace. He also mentioned two other features, the death of many and a time frame for the elements. A comparison of the events of near-death experience prophetic visions of the Earth's future and prophecies from the Bible and the Mormons' Doctrine and Covenants shows nearly complete agreement. These catastrophic events are prophesied to occur on the Earth into the 21^st century and to culminate with a new world of peace that is constituted of good people.     

The Origins of Hopelessness Among Inner-City African-American Adolescents

Much has been written in recent years about hopelessness among residents of impoverished inner-city neighborhoods, but little research has been conducted on the origins of hopelessness. The literature on social disorganization and the literature on child development independently suggest two possible causes of hopelessness among adolescents: disruptive events and lack of connectedness to people and institutions. We explore these two factors as predictors of hopelessness for 5895 youths living in impoverished inner-city neighborhoods in Mobile, Alabama. The longitudinal data for this study allow us to explore the development of hopelessness over time, predicted by prior levels of disruption and connectedness. The results show that over time several variables associated with disruption (Change in Mother Figure, Exposure to Violence, Traumatic Stress, Worry) and connectedness (Sense of Community, Warmth Toward Mother, Religiosity) are positively or negatively associated with increased feelings of hopelessness among inner-city adolescents.     

PsychLib: A library of machine language routines for controlling psychology experiments on the Apple Macintosh computer

The hardware and system software of the Apple Macintosh computer are described, and their implications for conducting psychological research is discussed. A library of machine language routines for presenting auditory and visual stimuli and recording response latencies is described.     

A COMPARISON OF TIME DELAY AND DECREASING PROMPT HIERARCHY STRATEGIES IN TEACHING BANKING SKILLS TO STUDENTS WITH MODERATE HANDICAPS

Four students with moderate handicaps were taught to cash checks and to use an automatic teller through either a decreasing prompt hierarchy or time delay procedure. The strategies were compared within a multielement design. Results indicated that both strategies led to the acquisition of the target tasks; however, the decreasing prompt hierarchy was more efficient. Four and 8-week follow-up probes indicated that the strategies were equally effective in producing maintenance of performance.     

Family Assisted Contingency Management within the Context of Evidence-Supported Treatment for Child Neglect and Drug Abuse

Contingency management (CM) has extensively been shown to be effective in reducing substance use disorders, but its effects in reducing child maltreatment have yet to be determined. The current study provides preliminary support for the utilization of an innovative family-assisted CM component in 18 mothers who were referred to an evidence-supported behavioral treatment for concurrent child neglect and drug abuse by Child Protective Service caseworkers. In the examined CM, participants were invited to indicate from a list of common actions incompatible with child neglect (i.e. positive parenting actions), the extent to which these actions had been experienced utilizing a 3-point scale (almost never, sometimes, almost always). For each item that was indicated to be almost never or sometimes experienced, the participants were queried to indicate if the neglect incompatible action should be targeted as a therapeutic goal. Contingencies were subsequently established in which the participants were rewarded by involved family members for their completion of therapeutic goals. At baseline, results indicated that there was a negative association between the number of neglect incompatible parenting actions that were infrequently experienced and child abuse potential. A hierarchical multiple regression analysis showed that the number of neglect incompatible actions targeted as therapeutic goals at baseline, but not the number of positive parenting actions experienced infrequently at baseline, predicted reduced child maltreatment potential following treatment. These findings suggest the examined CM may assist evidence supported behavioral treatment specific to child neglect and drug abuse.