Intermanual Interactions During Simultaneous Execution and Programming of Finger Movements

In bimanual movements, some differences between the movements performed by the two hands cause interference, while others do not. Similarly, in choice between responses with the left and right hand some differences between the two movements increase RT, while others do not. It is suggested that both kinds of effects are, at least in part, due to the incompatibility between processes that determine characteristics of movements jointly for both hands and that are present during preparation as well as during execution. This hypothesis implies that during execution of one movement, programming of a different movement to be performed with the other hand should be impaired, as compared to a condition in which the successive movements of both hands are the same. This expectation was confirmed for finger movements of different forms where an effect on choice RT had been shown previously. On the other hand, interference between execution and programming is not to be expected when successive movements differ in characteristics that are likely to be specified separately for each hand, as indicated by a lacking effect in choice experiments. This expectation was confirmed for successive movements performed with different fingers of either hand as compared to movements performed with the same fingers.     

Blocking in Rapid Finger Tapping: The Role of Variability in Proximodistal Coordination

In rapid finger tapping, occasional intertap intervals of about twice the normal length or even longer, called blockings, can be observed. Skilled rapid tapping requires that flexor and extensor activity be timed so that they coincide with certain phases of the finger movement. In the present study, the hypothesis examined was that blockings are associated with a deviation from the proper timing relations between the more proximal signals (electromyographic [EMG] bursts) and the more distal signal (position-time curve of the finger). Participants (N = 8) performed up-and-down tapping. Blockings were compared with the preceding normal tapping cycles; a temporal forward shift of the flexor burst in the time interval between two kinematic landmarks—the lifting of the finger and the reversal of the movement—was found consistently in the blockings The phase shift of the flexor burst relative to the kinematic landmarks did not develop gradually in the course of the tapping cycles that preceded the blocking but was an abrupt deviation, which suggests that blockings occur with an increased likelihood as the extremes of the normal variability of the phase relation are approached.     

The Significance of the Rorschach Method for Consulting Psychology

Abstract

A round-table discussion of the Rorschach test was held at Albany, New York, on May 8, 1937, in connection with the eighth annual meeting of the Association of Consulting Psychologists. There were 32 persons present at this conference with Dr. Bruno Klopfer, of Teachers College, Columbia University, presiding. Dr. Klopfer opened the discussion with a brief survey of the development of the Rorschach method. He presented figures to show the growth of the Rorschach Research Exchange which started with 14 subscribers in the Summer of 1936 and has now reached a total of more than one hundred subscribers in the United States and Europe. He then introduced the various speakers.     

“Authoritarianism” and Agreement with Things Authoritative

The use of personality and attitudinal questionnaires in private executive and military samples is briefly reviewed. The need for evidence regarding the factor similarity of such questionnaires in comparative studies is noted. Such a comparative factorial study of an abbreviated version of the Shure-Meeker (11) Personality/Attitude Schedule (PAS) is reported. In terms of the general scales examined, three of the four scales emerge in both samples. The order of emergence, as well as the number and item content of the factors, differs slightly between the two samples. Caution is suggested in assuming factor similarity across samples in comparative studies utilizing the PAS and other personality and attitudinal instruments.     

Giving Voice to the Experiential Value of Natural Environments

People value natural environments in many different ways. In addition to the various tangible products and benefits that can be produced from a natural environment, people may also find value in their immediate experience of the environment while they are in it. This experiential value is an important aspect of quality of life for many people, but it is often not taken into account in making decisions about managing natural environments. In part, this is because the experiential value of the environment can be difficult for people to express in words. In this article, I explore how first-person methods from experiential and phenomenological psychology may help in giving voice to the ineffable experiential value of natural environments. Drawing on the work of Charles Lewis, Eugene Gendlin, and Kenneth Shapiro, I illustrate how an initially inarticulate, bodily felt sense of the experiential value of a natural environment can be explicated in a way that both expresses and carries forward the implicit sense of value. Such practices might serve as a basis for an environmental decision-making process that incorporates the hard-to-express experiential values of nature.     

Children's Eyewitness Identification as Implicit Moral Decision‐Making

Why are young children particularly prone to make false positive errors or false alarms when identifying a wrongdoer? In three studies, the problem was approached using a signal detection analysis, focusing on the moral costs of false alarms, as understood at different points in development. The findings are as follows: (i) decisional criteria became more conservative, indicating fewer false alarms, with age in three studies; (ii) children's beliefs about the seriousness of false alarms and misses changed from (a) a non‐moral concern to (b) a moral concern for misses to (c) a moral concern for false alarms. (iii) These findings were replicated in two demographically different communities. More critically, (iv) framing of the filmed event, for example, as a moral transgression (stealing) or a pro‐social (helping) act (Study 1) and as intentional with little damage or unintentional with major damage (Study 3), interacts with age in influencing decisional criteria. Copyright © 2012 John Wiley & Sons, Ltd.