The concept of termination and the evolution of psychoanalytic thought

Termination is a post-Freud contribution to the psychoanalytic process, which is never complete. The concept is illuminated in its analytic history and development. A formal well-defined terminal phase led to a tripartite psychoanalytic process which derived from and contributed to advances in psychoanalytic theory and knowledge. The terminal phase is a valuable addition and conclusion, but may be invested with irrational expectation and analytic myth. Various features and formulations of the terminal phase are explored, and the limitations of termination are noted.     

Preference as a function of the correlation between stimuli and reinforcement outcomes

Pigeons' preferences for stimuli that were to varying degrees correlated with outcomes were studied in two experiments using a concurrent-chain procedure. The pigeons chose between two terminal links, each ending with food reinforcement and with blackout on half of the trials. In the first experiment, one terminal link (nonpredictive or unreliable link) provided stimuli completely uncorrelated with the outcomes while the other terminal link (predictive or reliable link) provided stimuli that were, to varying degrees, correlated with these outcomes. All pigeons showed increasing preferences for the predictive link as the reliability of the stimuli in that link increased. In the second experiment, stimuli in both terminal links were differentially correlated with the outcomes. The pigeons again preferred the more reliably correlated terminal link. The relation between these results and the delay-reduction hypothesis and conditioned reinforcement account is noted. The behavioral value of predictive stimuli may lie in their permitting the organism to more effectively apportion its time between interim activities and terminal responses.     

Euthanasia,the terminal patient,and the physician's role

A random sample of Cleveland clergy was asked to assess 1) the terminal patient's views on death, 2) the desires of some terminally ill patients to find an easy and dignified death, and 3) the role the physician ought to play in treating terminal patients. Protestant clergy more than their Catholic counterparts are substantially in favor of 1) disclosure of terminal illness, 2) allowing an easy death for the terminal patient at his request, and 3) facilitating the role of the physicians in cases of terminal illness. Fundamentalist Protestants are less approving than liberal Protestants. Clerics who saw their role extend beyond man's spiritual need approve of the physician's disclosure of terminal illness and his cooperation with patients who request with-holding or terminating medical treatment.This work was supported by the office of Research Development at Bowling Green State University and the College of Arts and Sciences.     

On the measurement of reinforcement frequency in the study of preference

In a two-link, concurrent-chain schedule, pigeons' pecks on each key during the initial link occasionally produced a terminal link, during which only that key was operative. Responses in the terminal link were reinforced with food on either fixed-interval or variable-interval schedules. In one experiment, relative amount of responding in the initial link equaled the relative harmonic rate of reinforcement in the terminal links. In a second experiment, the selection of interreinforcement intervals in variable-interval schedules in the terminal links was such that rates of reinforcement based on the harmonic or on the arithmetic means of the interreinforcement intervals predicted opposite preferences in the initial links. The observed preference was consistent with that predicted by the harmonic rather than by the arithmetic rates of reinforcement.     

The effect of education on the onset and rate of terminal decline

Differences in the time of onset and magnitude of terminal decline were examined in three cognitive domains: processing speed, episodic memory, and global function. In addition, cognitive reserve was investigated by testing whether education affected the onset or rate of decline across these domains. Eight hundred ninety-six community-dwelling Australian adults aged ≥ 70 years were assessed up to four times over 12 years, with vital status followed for 17 years. For each of the cognitive measures, a series of change point models were fitted across the 20 years before death to find the optimal point at which terminal decline was distinguished from preterminal decline. Change points were then assessed separately for high- and low-education groups. The change points were 8.5 years for processing speed (95% CI: 6.0-11.2 years), 7.1 years for global function (6.2-9.3), and 6.6 years for episodic memory (5.3-7.1). The rate of decline was two to four times greater in the terminal phase relative to the preterminal phase, depending on the domain. Increased education changed the terminal decline effect differently for each of the three tests, either by significantly hastening the onset of terminal decline and decreasing the rate of decline, or by increasing the rate of either preterminal or terminal decline. Analyses were repeated excluding participants diagnosed with dementia, with no substantive change to the outcomes. In conclusion, the rate and onset of terminal decline varied somewhat across cognitive domains. Education affected terminal decline differently across the domains, but this modification was not consistent with the predictions of cognitive reserve theory.     

Top-down processing and the suffix effect in young and older adults

The suffix effect has generally been viewed as reflecting an automatic component involving the terminal item and a component susceptible to top-down influences involving the preterminal items (Balota & Engle, 1981). Recent findings have raised questions about this widely accepted view of the suffix effect by showing that the terminal component is not insensitive to top-down influences (Bloom & Watkins, 1999). In the present study, we attempted to uncover the source of these contradictory findings by assessing whether the terminal item's susceptibility to top-down influences might depend on subjects' first-hand experience of the extent to which recall is affected by the suffix. Furthermore, we examined whether age differences in the suffix effect could be attributed to age-related declines in inhibitory processes. Our findings supported both predictions.     

Incentives,information, rehearsal,and the negative recency effect

The negative recency effect is generally attributed to inadequate rehearsal of terminal input items during study. In two experiments, Ss were encouraged to increase rehearsal of initial or terminal input items by offers of incentives for remembering these items and information that there would be a delayed memory test (Experiment I) or by explicit instructions to rehearse terminal items and provision of added rehearsal time (Experiment II). Serial position curves in immediate and delayed recall were little affected by these manipulations. These results are more in line with models that give rehearsal the role of maintaining items in a short-term store than with models that accord rehearsal a role in transfer of information to a more permanent store.     

Second-order schedules of token reinforcement: effects of varying the schedule of food presentation

In the initial link of a complex schedule, one discriminative stimulus was presented and lever pressing produced tokens on fixed-ratio schedules. In the terminal link, signalled by a second discriminative stimulus, deposits of the tokens produced food. With two rats, the terminal link was presented after each sixth component schedule of token reinforcement was completed. With the other two rats, the terminal link was presented following the first component schedule completed after a fixed interval. During the terminal link, each token deposit initially produced food. The schedule of food presentation was subsequently increased such that an increasing number of token deposits in the terminal link was required for each food presentation. Rates of lever pressing in the initial link were inversely related to the schedule of food presentation in the terminal link. These results are similar to those of experiments that have varied schedules of food presentation in chained schedules. Rates and patterns of responding controlled throughout the initial link were more similar to those ordinarily controlled by second-order brief-stimulus schedules than to those controlled by comparable extended chained schedules.     

Logotherapy in the Care of the Terminally Ill

SUMMARY

Logotherapy is very useful in dealing with a person with a terminal illness in that such a person often feels that life is meaningless. Viktor Frankl asserts that each person's life has a unique meaning even when the person is confronted with a terminal condition over which he/she seemingly has little control. It is the role of the logotherapist to help the person to discover that unique meaning within himself/herself. The logotherapist does not provide the meaning, but rather assists the person in discovering his/her own meaning. This article explores the various ways by which meaning may be discovered through the methods of logotherapy.     

Two-component theory of the suffix effect: Contrary evidence

The suffix effect is the selective impairment in recall of the final items of a spoken list when the list is followed by a nominally irrelevant speech item, or suffix. It is widely assumed to comprise a bottom-up, or structural, effect restricted to the terminal item and a top-down, or conceptually sensitive, effect confined to the preterminal items. Reported here are eight experiments that challenge this view by demonstrating that the terminal suffix effect, as well as the preterminal suffix effect, is susceptible to conceptual influence. The entire suffix effect may be better conceived of as a phenomenon arising from perceptual grouping.     

The effects of rime on auditory recency and the suffix effect

Two experiments are reported that consider the role of rime as the content of Precategorical Acoustic Storage (PAS). It was hypothesised that with auditory presentation of lists the rime component of the final item (the final vowel and, optionally, terminal consonant cluster of a word) was preserved in PAS and this served as a recall cue to identify the final item. Experiment 1 compared recall performance when the terminal or penultimate words rhymed with an irrelevant stimulus suffix. A suffix that shared a rime with the terminal word was found to attenuate the suffix effect, in line with Carr and Miles (1997) and consistent with the use of PAS as a positional code. However, contrary to the hypothesis that PAS information is automatically used to reconstruct the final item, the suffix effect was no greater when the suffix rhymed with the penultimate item than when no relationship existed between the suffix and the final item. Experiment 2 demonstrated that when the terminal and penultimate words shared a rime there was a drop in recall performance for the final item but a corresponding increase in correct recall of the penultimate item. No such changes were observed when the rime was shared between terminal and antepenultimate items. It is suggested that adjacency of identical rimes allows improved reconstruction of item information at the expense of order information.     

Context dependent changes in the reinforcing strength of schedule-induced drinking.

Previous experiments show that the opportunity to engage in schedule-induced responding is reinforcing. In this experiment, the reinforcing strength of schedule-induced drinking was measured. Four rats were trained on a concurrent-chain schedule. The two terminal links provided food pellets on identical fixed-time schedules. In addition, one terminal link also provided the opportunity to press a button that operated a water dipper. In this link, the rats showed polydipsic drinking. Button-pressing rate for polydipsic drinking was a bitonic function of pellet rate, and it was possible to describe the relationship with a slightly modified version of the matching equation for primary reinforcement. This equation also closely fit the data from other studies. Initial-link response rates, however, did not appear to be influenced by the availability of water in the terminal links. Control conditions suggested that the reinforcing strength of polydipsia was strongly bound to the context provided by periodic food reinforcement.     

Rational suicide and the crisis of terminal illness

Abstract

One of the controversial issues facing counselors in the 1990s is whether or not suicide may be considered a rational choice for clients with terminal illness. This article begins by reviewing the definition of rational suicide and the literature and statistics pertaining to suicide and terminal illness. Then various issues related to rational suicide as a treatment option are addressed, including moral and ethical issues.     

A processing division on the recency axis: The selective effects of visual field,match type,and direction of reading on terminal and pre-terminal items in a letter matching task

Four experiments were conducted to evaluate the hypothesis that different processes are involved in decisions about terminal and pre-terminal items in a sequential item recognition task. The impetus for the investigation was previous findings that the matching of terminal and pre-terminal items to simultaneously presented bilateral probes yielded a right visual field (RVF) and left visual field (LVF) advantage respectively.Experiments 1 and 2 demonstrated that the interaction between match type and visual field, generally attributed to hemispheric specialization, is restricted to decisions about terminal items, while the left visual field advantage found for pre-terminal items was dependent on a left-to-right scanning strategy. Experiments 3 and 4 provided further evidence that a serial search through the probe set determined responses to pre-terminal items by showing that the effect was dependent on a varied mapping between stimuli and targets. When target items could be identified without a serial search through the memory set, the left visual field advantage for pre-terminal items was abolished.The results confirm that distinct processing principles are involved in decisions about terminal and pre-terminal items in recognition memory. They suggest that the process responsible for decisions about pre-terminal items involves a habit-controlled scanning mechanism operating serially on spatially distributed information. The process responsible for decisions about terminal items may be based on either: (a) hemispheric principles, or (b) a link between the content of attention and spatially distributed expectations.     

Choice in the time-left procedure and in concurrent chains with a time-left terminal link.

In two experiments, rats chose between a standard fixed-duration food-associated stimulus and a stimulus whose duration was the time remaining to reinforcement in an elapsing comparison interval. In Experiment 1, 4 rats responded in a time-left procedure wherein a single initial-link variable-interval schedule set up two potential terminal links simultaneously. As time elapsed in the initial-link schedule, the choice was between a standard fixed-interval 30-s terminal link and a time-left terminal link whose programmed interval requirement equaled 90 s minus the elapsed time in the initial link. Rats generally responded more on the lever with the shortest programmed terminal-link duration, but the temporal parameters of the procedure were found to vary with response distributions. Contrary to previous reports, therefore, time-left data were well predicted by choice models that make no assumptions about animal timing. In Experiment 2, 8 rats responded on a concurrent-chains schedule with independent variable-interval initial links and a time-left terminal link in one of the choice schedules. On the time-left lever, the programmed terminal-link delay equaled 90 s minus the elapsed time in the time-left initial link. On the standard lever, terminal-link responses were reinforced according to a variable-interval schedule whose average value varied over four conditions. Relative time-left initial-link responses increased in the elapsing time-left initial-link schedule as the time-left terminal link became shorter relative to the standard terminal link. Scalar expectancy theory failed to predict the resultant data, but a modified version of the delay-reduction model made good predictions. An analysis of the elaboration of scalar expectancy theory for variable delays demonstrated that the model is poorly formulated for arithmetically distributed delays.     

Suboptimal choice in a percentage-reinforcement procedure: effects of signal condition and terminal-link length.

Pigeons' choice between reliable (100%) and unreliable (50%) reinforcement was studied using a concurrent-chains procedure. Initial links were fixed-ratio 1 schedules, and terminal links were equal fixed-time schedules. The duration of the terminal links was varied across conditions. The terminal link on the reliable side always ended in food; the terminal link on the unreliable side ended with food 50% of the time and otherwise with blackout. Different stimuli present during the 50% terminal links signaled food or blackout outcomes under signaled conditions but were uncorrelated with outcomes under unsignaled conditions. In signaled conditions, most pigeons displayed a nearly exclusive preference for the 100% alternative when terminal links were short (5 or 10 s), but with terminal links of 30 s or longer, preference for the 100% alternative was sharply reduced (often to below .5). In unsignaled conditions, most pigeons showed extreme preference for the 100% alternative with either short (5 s) or longer (30 s) terminal links. Thus, pigeons' choice between reliable and unreliable reinforcement is influenced by both the signal conditions on the unreliable alternative and the duration of the terminal-link delay. With a long delay and signaled outcomes, many pigeons display a suboptimal tendency to choose the unreliable side.     

Connecting the Commodore 64 to the IBM PC

Hardware is described that permits bidirectional transfer of data between the Commodore 64 and an IBM-compatible PC. Commercial terminal programs can be used to transmit data. The hardware, which can be constructed for less than $15, opens up several opportunities for making good use of the cost-effective C64 computer.     

放弃治疗:ICU决策的经济影响力

对ＩＣＵ放弃治疗的决策,经济因素不应是主要的。人们完全能够在尊重科学和理性、尊重生命末期价值和意义以及追求社会资源公正分配和有效利用基础上对脑死、植物状态或临终病人的放弃治疗达成共识。目前,重要的是需要制定相关政策和法律,保障ＩＣＵ放弃治疗的合理实施。     

Escape from freedom: Choosing not to choose in pigeons

Preference for the availability of food-reinforcement alternatives was investigated with Rachlin and Green's (1972) concurrent-chains self-control paradigm. The terminal link of one chain made available a choice between immediate access to food for T seconds and delayed access to food for 4 seconds. The terminal link of the other chain provided only delayed access to food. When T was reduced to .25 seconds, pigeons began to select the delayed-access key in both terminal links. Even so, the pigeons strongly preferred constraint over choice. This effect could not be accounted for by differences in the actual amount of food obtained in the terminal links, by avoidance of the immediate-reinforcement key when not presented as part of a choice, or by avoidance of a multi-key terminal link. Rather, constraint was preferred over freedom. Apparently, the preference for choice is determined by the particular type of choice offered.