Sequential Performance in Young and Older Adults: Evidence of Chunking and Inhibition

ABSTRACT

Two experiments were conducted to examine possible sources of age-related decline in sequential performance: age differences in sequence representation, retrieval of sequence elements, and efficiency of inhibitory processes. Healthy young and older participants learned a sequence of eight animal drawings in fixed order, then monitored for these targets within trials of mis-ordered stimuli, responding only when targets were shown in the correct order. Responses were slower for odd numbered targets, suggesting that participants spontaneously organized the sequence in two-element chunks. Perseverations (responses to previously relevant targets) served as an index of inhibitory inefficiency. Efficiency of chunk retrieval and self-inhibition were lower for older than for younger adults. Increasing environmental support in Experiment 2 through overt articulation of current chunk elements showed a pattern of results similar to Experiment 1, with particular benefit for older adults. The findings suggest an underlying susceptibility to interference in old age.     

Group Responsibility for Ethnic Conflict

When a group of persons such as a nation orcorporation has a relatively clear structureand set of decision procedures, it is capableof acting and should, it can well be argued, beconsidered morally as well as legallyresponsible. This is not because it is afull-fledged moral person, but becauseassigning responsibility is a human practice,and we have good moral reasons to adopt thepractice of considering such groupsresponsible. From such judgments, however,little follows about the responsibility ofindividual members of such groups; much moreneeds to be ascertained about which officialsor executives are responsible for what beforewe can consider individual members of nationsor corporations responsible.Whether an unorganized group can be morallyresponsible is much less clear, but there havebeen useful discussions in recent years of thepossible responsibility of whites for racism,or males for sexism, and the like. In thisessay I explore arguments for consideringgroups or their members responsible for ethnicconflict. Such groups may lack a clearorganizational structure, but they are notrandom assortments of persons. Groups can andoften should take responsibility for theattitudes and actions of their members, and cansometimes be considered responsible for failingto do so. And persons often can and shouldtake responsibility for the attitudes andactions of the groups of which they aremembers.     

Curiosity as a Guide to the Virtuous Life

We are concerned here with the existential question: In order to live a virtuous life, whether it is better to commit one's life to good works among humankind or to the perfection of one's spiritual being by turning away from humanity and devoting oneself entirely to God. We examine this issue—a controversy in moral philosophy from the time of the ancient Greeks—in a short story by Leo Tolstoy.     

Erna and Melanie Klein

Erna was one of the child patients treated by Melanie Klein in Berlin, employing her recently discovered play technique. Since Erna died in Chile, the authors considered the IPA Congress in Santiago an opportunity to present a paper as a homage both to Erna and, especially, to Klein. She learned much from that very disturbed child, which she later used to sustain the ongoing development of her theories. The paper explores biographic data relevant to understanding both the case and the theories. It analyses the case material to follow Klein in the discovery and the handling of the child's transference and the harsh expressions of hate, jealousy and envy, which are brought in, with sad consequences, by strong persecutory feelings. Klein's comparison of this case with that of Freud's Wolf-man is also considered, mostly to show that the similarities were less than originally claimed, and that Klein, perhaps, was introducing a theoretic shift which led her technique to gradually change from ' Nachträglichkeit ' to the 'signification-resignification' pair, akin to Strachey's concept of the mutative interpretation. Lastly, the comprehension of Erna's strong psychotic traits and the links with later developments of the theory on psychosis are studied.     

Burnout and Depression Among Roman Catholic Secular,Religious, and Monastic Clergy

Burnout and depression among Roman Catholic secular, religious order, and monastic (Cistercian) priests was investigated using the Maslach Burnout Inventory (MBI) and the Center for Epidemiological Studies-Depression (CESD) scale. Additionally, a Self-Report-Inventory (SRI) was included requesting information on demographics as well as four categories of predictor variables (vocational satisfaction, social support, spiritual activities, and physical environment) associated with burnout and depression. All participants were randomly selected. The survey yielded a return rate of 90.67%. Secular clergy reported significantly greater emotional exhaustion than did monastic clergy. Secular priests also had significantly greater depression (72%), when compared to religious (40.8%) and monastic (39.5) clergy. Overall group comparisons revealed that secular clergy experienced the highest degree of burnout and depression, monastics the least, and religious priests falling in between. The lack of social support and sense of isolation, for secular clergy, were key elements associated with their experience of both burnout and depression. Candidate in Psychology atand a Psychology Intern at the Ohio State University     

Influence of win-loss ratio on performance,satisfaction and preference for opponents

Hypotheses about the preference for opponents in competitive situations, about performance under various win-loss ratios, and about task and opponent satisfaction under various win-loss ratios were tested. A 5 × 5 latin square with four replications and a repeated measure factor of trials was the design used with 20 female college students as subjects. The five different win percents were W₁₀, W₃₀, W₅₀, W₇₀, and W₉₀. A manipulative maze task was used with subjects receiving 20 trials against each of five confederate opponents. Results indicated that (a) when a person knows little or nothing about her ability level she initially prefers to compete with opponents of low ability but with each subsequent contest opponents of higher ability levels are preferred; (b) subjects performed better in the W₅₀ condition; (c) task satisfaction is higher when the percent of wins is equal to or greater than the percent of losses; and (d) opponent satisfaction is greater for opponents who perform equal to or better than the subject.     

A comparison of the thurstone method of multiple factors with the hotelling method of principal components

The factors found by the Hotelling method of principal components present the same necessity for rotation as those found by the Thurstone method of multiple factors.The Thurstone method of multiple factors is here found superior to the Hotelling method of principal components, and is suggested as the method of choice for all problems requiring the determination of elemental components from a group of related variables, since it was found on every point of comparison that, when applied to a correlation matrix of unknown communalities, the Thurstone method was more accurate than the Hotelling method, and also required much less time.