Predicting mouth width from inter-canine width--a 75% rule

It has been suggested that inter-canine width plus 57% of the cumulative distance between the lateral aspect of the canines and the pupil centers can be used to estimate mouth width. Evidence also suggests that the distance between the medial irises approximates actual mouth width fairly well. However, these soft tissue prediction guidelines are limited because they rely on accurate medio-lateral positioning of the pupils within the orbits, for which no systematic empirical evidence appears to exist at this stage. It would, therefore, be more appropriate to use only known hard tissue landmarks in mouth width prediction. This study reports the results of using inter-canine width as a percentage of mouth width for its prediction. This method seems favorable in comparison to the other guidelines because it is as accurate, uses known hard tissue landmarks, and does not rely on assumptions concerning pupil location. Estimating mouth width by using the canines alone, therefore, seems the best guideline to use in facial approximation techniques, at least given knowledge existing at this stage.     

U.S. Engagement in East Asia: A Case for ‘Track Two’ Diplomacy

As the Bush presidency draws to a close, the foreign policy community is taking stock of contemporary U.S.-Northeast Asian relations, assessing the challenges and opportunities that are likely to confront the next administration. China presents both in abundance, as reflected in ongoing tensions and misunderstandings in the Sino-American bilateral relationship. This article assesses the prospects for Washington to improve its relations with China through the mechanism of “track two” diplomacy. First, we expand on the track two concept by examining its main components and functions with illustrative examples. We extend the existing conceptualization of track two beyond its traditional conflict resolution functions and develop an account of it as a mechanism for policy coordination and the reorientation of regional dynamics from conflict to cooperation. Second, we identify major areas of U.S. interest in Northeast Asia and show how track two diplomacy might usefully be pursued within these contexts. Our analysis culminates with recommendations on how the Unites States should apply track two strategies in its relations with China.     

China, Nuclear Security and Terrorism: Implications for the United States

This article outlines Chinese strategic nuclear forces and the Chinese philosophical approach to nuclear security. It then focuses on the domestic conditions in China which could precipitate vulnerabilities to its nuclear forces. From information about internal security conditions in China, specific internal threats to Chinese nuclear security will be derived. Based on these threats, several outsider and insider scenarios will be outlined involving a variety of terrorist or terrorist related behaviors. These notional scenarios will include everything from overrun or attack, to diversion, to cyber terrorism, to sabotage. The article will then cover what these scenarios and the possible Chinese reaction to them may mean for the security, military and diplomatic strategies of the United States.     

Reassessing U.S. Strategy in the Aftermath of the Korean War

This article examines the reassessment of U.S. strategy that Dwight D. Eisenhower directed after replacing Harry S. Truman in the White House in January 1953, as he worked to bring the Korean War to an end and then confronted the problems remaining in its aftermath. Despite much of the rhetoric of the early Eisenhower administration, the outcome of that reassessment fit more closely the objective of containment than key strategic formulations of its predecessor. Why was this so? How did the orientation apply to ending the war in Korea and sustaining the U.S. position there and elsewhere after the armistice? What insights, if any, do the process of reassessment and its outcome provide for the present? Answers to these questions serve to emphasize the dynamic and contingent nature of American strategy in the early Cold War and the importance of flexible, engaged leadership in the White House.     

Does Mother Know Best? Adolescent and Mother Reports of Impulsivity and Subsequent Delinquency

Although impulsivity is one of the strongest psychological predictors of crime, it is unclear how well impulsivity, measured at a specific moment in adolescence, predicts criminal behavior months or years into the future. The present study investigated how far into the future self-reports and parents’ reports of a youth’s impulsivity predicted whether he engaged in illegal behavior, whether one reporter’s assessment was more predictive than the other’s, and whether there is value in obtaining multiple reports. Data were obtained from a 6-year longitudinal study of adjudicated juvenile offenders (n = 701 mother-son dyads). Youth (m = 15.93 years old; sd = 1.14) and their mothers independently reported on adolescents’ impulsivity at the initial assessment. We examined the prospective correlation of these measures with illegal behavior, assessed by official records of arrests and youths’ self-reports of offending across the 72-month study period. Youths’ and mothers’ reports of the adolescents’ impulsivity were weakly, but significantly, correlated with one another. Furthermore, mothers’ ratings of their sons’ impulsivity predicted arrest up to 6 years into the future, whereas youths’ reports did not significantly predict arrest beyond 30 months. With respect to youths’ self-reports of offending, mothers’ ratings of impulsivity again predicted farther into the future (as late as 6 years later) than did youths’ self-reports of impulsivity, which were not predictive beyond 4 years. However, across the first 4 years, youths’ self-reports of impulsivity explained more variance in self-reported offending than did mothers’ ratings. The results underscore the endurance of the predictive utility of an assessment of impulsivity and the importance (and accuracy) of parents’ reports of developmental constructs, even when their children are adolescents.