Memory for the pragmatic implications of sentences

A sentence pragmatically implies another sentence when information in the first sentence leads the hearer to expect something that is neither explicitly stated nor necessarily implied by the original sentence. Thus,The safe-cracker put the match to the fuse pragmatically impliesThe safe-cracker lit the fuse. In a cued recall task with sentences containing pragmatic implications, 19% of the items were recalled correctly while 26% of the responses consisted of the pragmatic implications of the original sentences. The data were interpreted as demonstrating the strong interaction of the subjects’ long-term knowledge with the episodic memory for sentences task.     

The effectiveness of different sweeteners in suppressing citric acid sourness

The exact mechanism that causes taste suppression in a perceptually heterogeneous mixture, and the locus of that mechanism, are as yet unknown. The present study was designed to explore the idea that mixture suppression is a perceptual phenomenon and not the result of physical, chemical, or receptor-substance interactions. An investigation was carried out as to whether perceptually similar taste stimuli give rise to the same sensory interactions when mixed with a substance of a different taste quality. In the first study, five different sweeteners (sucrose, fructose, aspartame, saccharin, and sorbitol) were matched in perceived sweetness intensity, in order to obtain five perceptually similar stimuli. Every equisweet sweetener concentration was mixed with each of four citric acid concentrations. In a second study, the sourness-suppressing effects of two sweeteners, sucrose and aspartame, were compared at four different concentration levels. Sourness scale values of unmixed citric acid, the unmixed sweeteners, and the citric acid/sweetener mixtures were assessed with a functional measurement approach in combination with a two-stimulus procedure. The equisweet sweeteners were equally effective in suppressing the perceived sourness intensity of citric acid over the concentration range used. The side tastes of the sweeteners, if present, did not have a substantial effect on the degree of sourness suppression.     

Dynamic changes in reinforcer effectiveness: satiation and habituation have different implications for theory and practice

Reinforcers lose their effectiveness when they are presented repeatedly. Early researchers labeled this loss of effectiveness as satiation without conducting an experimental analysis. When such an analysis is conducted, habituation provides a more precise and empirically accurate label for the changes in reinforcer effectiveness. This paper reviews some of the data that suggest that habituation occurs to repeatedly presented reinforcers. It also argues that habituation has surprisingly different implications than satiation for theory and practice in behavior analysis. For example, postulating that habituation occurs to repeatedly presented reinforcers suggests ways for maintaining the strength of an existing reinforcer and for weakening the strength of a problematic reinforcer that differ from those implied by an account in terms of satiation. An habituation account may also lead to different ways of conceptualizing the regulation of behavior. For example, habituation may be a single-process contributor to the termination of behaviors that are usually attributed to satiation (e.g., ingestive behaviors such as eating and drinking), fatigue (e.g., energetic behaviors such as running), the waning of attention (e.g., cognitive behaviors such as studying), and pharmacodynamic factors (e.g., drug taking).     

Recall of logical and pragmatic implications in sentences with dichotomous and continuous antonyms

Thirty-six subjects recalled sentences containing dichotomous or continuous antonyms in affirmative or negative form. The subjects made a considerable number of meaning-preserving recall errors for both dichotomous antonyms (not alive recalled asdead) and continuous antonyms (not hot recalled ascold). The negation of a dichotomous antonym logically implies its antonym, whereas the negation of a continuous antonym only pragmatically implies its antonym. Thus, the results suggest that subjects hearing sentences containing a logical or pragmatic implication tend to make the logical or pragmatic inference involved. Then, in recall, they do not remember that this was an inference and make the error of recalling the logical or pragmatic implication in place of the presented sentence.     

No vigilance deficit found in either young schizophrenic or ADHD subjects

Vigilance deficits have been found in both schizophrenic and ADHD subjects. The two patient groups have never been directly compared on any vigilance measure, however. In the present study 20 early-onset schizophrenics were compared to 20 ADHD adolescents on a Degraded Stimulus Continuous Performance Test (DS-CPT). A comparison group of 30 normal adolescents was also included. Results showed no significant differences between the three groups on any of the DS-CPT measures. Different hypotheses are put forth to explain the findings, among them that the task may be insensitive to identifying sustained attention deficits in adolescent populations.     

Word-finding abilities of three types of aphasic subjects

Word-finding difficulties are often observed among different types of aphasic patients. This investigation analyzed the word-finding abilities of 30 aphasic subjects (10 Broca's, 10 Wernicke's, and 10 anomic). Forty nouns counterbalanced according to word length and frequency of occurrence in English language usage were used as stimuli and presented through four modalities (oral expression, writing, auditory comprehension, and reading comprehension). It was expected that patterns of word finding abilities would help in the classification of the different types of aphasia. In addition, long words and less frequently occurring words in English language usage should prove more difficult in word-finding ability, regardless of modality. The results of this study found long words and less frequent words were more difficult for aphasic subjects. Among the modalities, long words were significantly harder than short words for the writing modality only. It was also found that semantic errors were the most common errors for all types of aphasic subjects. Broca's subjects produced significantly moreno response errors in oral expression; Wernicke's subjects produced significantly more semantic and phonemic errors in reading comprehension; and, Wernicke's subjects produced significantly more unrelated errors in both oral expression and reading comprehension. Clinical implications were also discussed.The present study was based on a doctoral dissertation completed at the City University of New York in partial fulfillment of the requirements of the doctoral degree in Speech and Hearing Sciences by the first author under the direction of the second author. The authors wish to thank Dr. Louis J. Gerstman for his assistance with the statistical analysis of this research and Dr. Robert Goldfarb for all his helpful suggestions and editorial comments.     

Gender displaying television commercials: A comparative study of television commercials in the 1950s and 1980s

Recent researchers have argued both that there has been change in the way gender is portrayed in television commercials and that gender images have remained stereotypical. Comparing television commercials from the 1950s/early 1960s to commercials from the 1980s, this study explores the issue of how much, if any, change has occurred in gender images. Additionally, the study focuses on the gender display of main characters and the circumstances under which it varies. Results indicate that there has been change in the images of women but not men. The activity that women are pictured in significantly changed from the 1950s to the 1980s, and a change in activity has the strongest effect on the display of gender.Partial funding for this research was provided by the Academic Senate of the University of California, Riverside. Statistical assistance was provided by Masako Ishii-Kuntz. Research assistance was provided by Kathryn Bigelow, Saralyn Caloff, and Eloy Zarate. We gratefully acknowledge the use of films housed at the UCLA Film and Television Archive. Our thanks to the anonymous reviewers atSex Roles for their helpful comments.     

Evidence for different types of errors being associated with different types of post-error changes

Psychonomic Bulletin & Review - Errors in simple choice tasks result in systematic changes in the response time and accuracy of subsequent trials. We propose that there are at least two...     

Eyewitness performance in different psychological types

A study of 112 subjects examined the performance on a complex memory task by various Jungian psychological types. Although differences did not emerge in terms of overall accuracy, they did emerge in terms of susceptibility to postevent information. Introverts and intuitives, alone and in combination, were found to be more prone to accept both misleading and consistent postevent information, rendering them more likely to be inaccurate in the first case and more likely to be accurate in the second case. A variety of explanations are considered.     

Serial position effects in recall of television commercials

Does the position of a television commercial in a block of commercials determine how well it will be recalled? The findings of naturalistic studies can be affected by uncontrolled presentation, viewing, and retention variables. In the present article, college students viewed lists of 15 commercials in a laboratory simulation and recalled the product brand names. In an immediate test, the first commercials in a list were well recalled (a primacy effect), as were the last items (a recency effect), in comparison with the recall of middle items. In an end-of-session test, the primacy effect persisted, but the recency effect disappeared. Embedding lists within a television program again produced better recall of the first items during end-of-session tests of recall and recognition. These results offered convergent validity for the naturalistic studies of commercial memory, and they supported the usefulness of combining laboratory and field methods to answer questions about everyday memory.     

The intrusive commercial: Influence of aggressive TV commercials on aggression

Two experiments have been conducted to investigate the aggression-eliciting properties of an aggressive commercial. The first experiment investigated the influence of an aggressive commercial on subsequent delivery of shocks to a confederate by male or female subjects, in presence and in absence of previous instigation to aggress. The second experiment examined the heart rate modifications before, during and after exposure to the aggressive commercial. Twenty males and 20 females participated to each experiment. Findings justify the concern for the aggression-eliciting properties of aggressive commercials.