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PubMed2001

The frontal lobes are necessary for 'theory of mind'.

Patients with limited focal frontal and nonfrontal lesions were tested for visual perspective taking and detecting deception. Frontal lobe lesions impaired the ability to infer mental states in others, with dissociation of performance within the frontal lobes. Lesions throughout the frontal lobe, with some suggestion of a more important role for the right frontal lobe, were associated with impaired visual perspective taking. Medial frontal lesions, particularly right ventral, impaired detection of deception. The former may require cognitive processes of the lateral and superior medial frontal regions, the latter affective connections of the ventral medial frontal with amygdala and other limbic regions.

Brain Mapping↗

PubMed1993

Minimal-deviation endometrioid adenocarcinoma of the uterine cervix. A report of five cases of a distinctive neoplasm that may be misinterpreted as benign.

We describe five cervical adenocarcinomas with unusual, deceptively benign histological features that occurred in women 34 to 42 years of age and caused problems in interpretation. The tumors were incidental findings in hysterectomy or cone-biopsy specimens in four patients; the fifth patient was investigated because abnormal glandular cells were found on a Papanicolaou smear. One patient had been exposed in utero to diethylstilbestrol. The cervix is known to have been abnormal on gross evaluation in only one case. Microscopic examination disclosed a deceptively benign-appearing proliferation of glands and cysts for the most part unassociated with a stromal reaction. Cilia were present in four neoplasms and apical snouts in three. Features that indicated the neoplastic nature of the glandular proliferation in these cases, to varying extents in individual cases, included the number of glands and their distribution, the shapes of the glands, their presence deep in the cervical wall, the focal presence of a stromal reaction, and moderate cytologic atypicality with occasional mitotic figures. None of the tumors is known to have recurred or metastasized. In our opinion, these distinctive neoplasms represent minimal-deviation endometrioid adenocarcinomas of the cervix.

Adenocarcinoma↗

PubMed2006

Assessing moral distress in respiratory care practitioners.

OBJECTIVE: To test the reliability and validity of a modified moral distress tool, originally developed for the nursing profession, on respiratory care practitioners. To describe the relationship between moral distress, career dissatisfaction, and job turnover in respiratory care. DESIGN: A 28-question survey was developed. Three categories of survey questions were predefined: "individual responsibility," "not in the patient's best interest," and "deception." Additional questions measured career dissatisfaction, job turnover, and demographic information. SETTING: University Hospital at the University of Virginia Health System, a 552-bed tertiary care hospital. SUBJECTS: Fifty-seven of 115 (49.6%) of respiratory care practitioners responded to the survey. INTERVENTIONS: Exploratory factor analysis was used to investigate the underlying factor structure. After we extracted theoretically meaningful factors, reliability of each factor was estimated. Multiple regression analysis was conducted to test if the underlying factors predicted career dissatisfaction and job turnover. MEASUREMENTS AND MAIN RESULTS: The factor analysis yielded a five-factor structure. Several questions in the "not in patient's best interest" category scored the highest moral distress including disagreements with surrogate decision makers and providing futile care. Higher scores were also found with questions regarding the perception of unsafe staffing and passively or actively participating in deception. None of the demographic variables predicted career dissatisfaction or job turnover. However, the perception of unsafe staffing was found to be a significant factor in predicting career dissatisfaction and job turnover. CONCLUSIONS: In this one-center pilot study, respiratory care practitioners reported experiencing moral distress in many areas of their practice. Distress related to the perception of unsafe staffing may be related to career dissatisfaction and job turnover. Further exploration of the factors that contribute to respiratory care practitioners' moral distress is needed, as well as implementing ways to ameliorate it.

Adult↗

PubMed2003

Nested variant of urothelial carcinoma: a clinicopathologic and immunohistochemical study of 12 cases.

Nested variant of urothelial carcinoma is characterized by confluent small nests and abortive tubules of mildly atypical neoplastic cells infiltrating the lamina propria and/or muscularis propria of the bladder. Despite its deceptively bland histomorphologic appearance, the lesion is reported to have an aggressive behavior. The collective immunohistochemical expression of suppressor genes, growth factor, and proliferation activity marker has not been previously studied in this disease. Formalin-fixed, paraffin-embedded archival tissues from 12 cases of nested variant of urothelial carcinoma were stained with monoclonal antibodies to p21, p27, p53, EGF-R, and bcl-2, as well as the proliferation marker MIB-1. The area of predominant immunoreactivity was also evaluated. The pattern of immunostaining was compared with the clinical parameters. p21 was positive in 10 of 12 cases and located at the deepest portion of the tumor in 5 of 10 positive cases. Immunoreactivity for p27 was seen in 11 of 12 cases and limited to the superficial portion of the tumor in 9 of 11 positive cases. Only 3 and 2 of 12 cases were positive for p53 and bcl-2, respectively. MIB-1 immunoreactivity ranged from 2 to 35% of the neoplastic cells, with most tumors showing a proliferation index of >15%. Follow-up ranged from 3 to 30 months (mean, 17.6 mo). All patients except one were alive, although three patients developed metastases. Nested variant of urothelial carcinoma is a deceptively benign-appearing neoplasm with potential of deep invasion and metastases. Immunohistochemically, nested variant of urothelial carcinoma shares some features with high-risk conventional urothelial carcinomas, such as loss of p27 expression and high proliferation index. Nevertheless, p53, bcl-2, or EGF-r immunoreactivity is not frequently seen.

Adult↗

PubMed2004

Pollinator attractiveness increases with distance from flowering orchids.

Orchids are extraordinary among plants because many species are pollinated through sexual duplicity by producing flowers that mimic female insects to lure unsuspecting males. Previous work showed that sexual deception by the orchid Chiloglottis trapeziformis can have a negative impact on its wasp pollinator Neozeleboria cryptoides. We report that female wasps may be capable of mitigating the cost of the orchids' deception. Although male wasps quickly habituated to areas planted with unrewarding flower decoys, we found that the effectiveness of the chemical cue used by the wingless females to attract males increases with increasing distance from an orchid patch. The apparent specificity of the males' site-based avoidance strategy means that females emerging in areas occupied by flowering orchids could, potentially, leave the orchid colony by walking to increase their attractiveness.

Animals↗

PubMed2002

How an orchid harms its pollinator.

Certain orchids produce flowers that mimic the sex pheromones and appearance of female insects in order to attract males by sexual deception for the purpose of pollination. In a series of field experiments, we found that the sexually deceptive orchid, Chiloglottis trapeziformis, can have a negative impact on its wasp pollinator Neozeleboria cryptoides. Male and female wasps, however, were affected differently by the orchid's deceit because of their different roles in the mimicry system. Male wasps could not discriminate between the chemical cues of orchids and female wasps, a vital signal in long-range attraction. Males, however, learn to avoid areas containing orchids. This strategy has implications for females attempting to attract mates in areas occupied by orchids. Compared with circumstances when females were on their own, females in the presence of orchids elicited fewer male approaches and no copulation attempts. Females in a large orchid patch also elicited fewer male approaches than females in a small patch. The nature of the orchid's impact on its wasp pollinator indicates an arms race evolutionary scenario in this interaction between plant and pollinator.

Animals↗

PubMed2004

The effects of nectar addition on pollen removal and geitonogamy in the non-rewarding orchid Anacamptis morio.

It has been suggested that the absence of floral rewards in many orchid species causes pollinators to probe fewer flowers on a plant, and thus reduces geitonogamy, i.e. self-pollination between flowers, which may result in inbreeding depression and reduced pollen export. We examined the effects of nectar addition on pollinator visitation and pollen transfer by tracking the fate of colour-labelled pollen in Anacamptis morio, a non-rewarding orchid species pollinated primarily by queen bumble-bees. Addition of nectar to spurs of A. morio significantly increased the number of flowers probed by bumble-bees, the time spent on an inflorescence, pollinarium removal and the proportion of removed pollen involved in self-pollination through geitonogamy, but did not affect pollen carryover (the fraction of a pollinarium carried over from one flower to the next). Only visits that exceeded 18 s resulted in geitonogamy, as this is the time taken for removed pollinaria to bend into a position to strike the stigma. A mutation for nectar production in A. morio would result in an initial 3.8-fold increase in pollinarium removal per visit, but also increase geitonogamous self-pollination from less than 10% of pollen depositions to ca. 40%. Greater efficiency of pollen export will favour deceptive plants when pollinators are relatively common and most pollinaria are removed from flowers or when inbreeding depression is severe. These findings provide empirical support both for Darwin's contention that pollinarium bending is an anti-selfing mechanism in orchids and for the idea that floral deception serves to maximize the efficiency of pollen export.

Animals↗

PubMed2006

Parameter learning from stochastic teachers and stochastic compulsive liars.

This paper considers a general learning problem akin to the field of learning automata (LA) in which the learning mechanism attempts to learn from a stochastic teacher or a stochastic compulsive liar. More specifically, unlike the traditional LA model in which LA attempts to learn the optimal action offered by the Environment (also here called the "Oracle"), this paper considers the problem of the learning mechanism (robot, an LA, or in general, an algorithm) attempting to learn a "parameter" within a closed interval. The problem is modeled as follows: The learning mechanism is trying to locate an unknown point on a real interval by interacting with a stochastic Environment through a series of informed guesses. For each guess, the Environment essentially informs the mechanism, possibly erroneously (i.e., with probability p), which way it should move to reach the unknown point. When the probability of a correct response is p > 0.5, the Environment is said to be informative, and thus the case of learning from a stochastic teacher. When this probability p < 0.5, the Environment is deemed deceptive, and is called a stochastic compulsive liar. This paper describes a novel learning strategy by which the unknown parameter can be learned in both environments. These results are the first reported results, which are applicable to the latter scenario. The most significant contribution of this paper is that the proposed scheme is shown to operate equally well, even when the learning mechanism is unaware of whether the Environment ("Oracle") is informative or deceptive. The learning strategy proposed herein, called CPL-AdS, partitions the search interval into d subintervals, evaluates the location of the unknown point with respect to these subintervals using fast-converging E-optimal LRI LA, and prunes the search space in each iteration by eliminating at least one partition. The CPL-AdS algorithm is shown to provably converge to the unknown point with an arbitrary degree of accuracy with probability as close to unity as desired. Comprehensive experimental results confirm the fast and accurate convergence of the search for a wide range of values for the Environment's feedback accuracy parameter p, and thus has numerous potential applications.

Algorithms↗

PubMed1996

Theory of mind abilities in individuals with autism, Down syndrome, and mental retardation of unknown etiology: the role of age and intelligence.

We examined theory of mind abilities of individuals with autism, mental retardation (MR) of unknown etiology, Down syndrome, and normal children. On false belief and deception tasks, normal children performed better than all clinical groups, while no differences emerged among the clinical groups. The groups with MR performed better than the group with autism on the value task only. For individuals with autism, theory of mind abilities correlated with verbal ability. For individuals with MR nonverbal abilities correlated with deception and false belief scores. Findings are discussed in terms of the specificity of the theory of mind deficit to autism.

Adolescent↗

PubMed2003

Family secrecy: a comparative study of juvenile sex offenders and youth with conduct disorders.

The reported research was designed to compare adjudicated male juvenile sexual offenders and youth with conduct disorders on five aspects of family secrecy and deception. Twenty-nine male juvenile sex offenders and 32 comparison youth from three child welfare agencies in New York State participated in the study. Research assistants, blind to the hypotheses of the study and status of the youth, coded agency records for five variables identified a priori as a basis of comparison. Analyses revealed that the two groups were different on three of the five and on the total number of items scored. Families of juvenile sex offenders told more lies, had more family myths, and were more likely to be involved in taboo behavior. Logistic regression revealed that this factor of family deception significantly increased the odds of sexual offending over and above other measures of family pathology. These data support the hypotheses of the study and have implications for both clinical practice and future research in this area.

Adolescent↗

PubMed1979

Clinical observations on several meridian loci in chronic hepatitis and liver cirrhosis in comparison with those in female neurovegetative disorder, pregnancy, and the steroid side-effects syndrome.

Patients with chronic hepatitis showed various grades of the pinch-pressure pain (P-p pain) at the right Ch'ü-Ch'üan (Li-8) locus. Sometimes the P-p pain also appeared at the left locus (Li-8) as well, but in such cases the tendency is towards a stronger reactivity at the right side than at the left, and the P-p pain does not appear at the left side alone. These findings offer a noticeable contrast to those seen in pregnant women and in steroid-treated patients affected with an obvious side effect where the stronger reactivity is to be seen at the left rather than at the right. The P-p pain grades were inclined to decrease in severe cases, especially in liver cirrhosis. In general, the variability of the P-p pain of grades correlated well with the process of the findings of the liver function test and of the chief subjective complaints. Therefore, the P-p pain test is useful for the diagnosis of chronic hepatitis. Regarding the grade distribution patterns of P-p pain at the Li-8, LI-4, LI-11, and SI-11 loci, patients with chronic hepatitis showed a pattern of higher grades of P-p pain reactivity at the right Li-8 and SI-11 loci, and at the left LI-4 and LI-11 loci, while patients with the so-called female neurovegetative disorder, pregnant women, and patients affected with steroid side-effects showed a perfectly reversed reactivity pattern. These findings can be useful for the differentiation between chronic hepatitis and those groups of diseases showing subjective signs deceptively similar to those of chronic hepatitis and those groups of diseases showing subjective signs deceptively similar to those of chronic hepatitis. The comparison of the skin temperature between the right and the left loci showed lower levels at the right than at the left, and the comparison of the skin pH between the both sides showed a more elevated level at the right than at the left. The mechanisms of these phenomena are discussed and what seems to be the most appropriate explanation at present is offered.

Acupuncture Therapy↗

PubMed2002

The meaning response and the ethics of avoiding placebos.

Because the "placebo effect" seems to result from "deception," it is often disparaged and despised. Rethinking this and realizing that these benefits flow largely from the meaning of medical encounters (and are far better understood as "meaning responses"); realizing that there need be no deception to elicit them and that they are often very desirable, engaging fundamental human biological pathways, puts the ethical dilemma in a new light. It seems unethical to avoid--to evade--coming to a full understanding of how meaning can so profoundly improve human well-being.

Analgesia↗

PubMed2000

The impact of polygraphy on admissions of victims and offenses in adult sexual offenders.

Sexual offenders are extremely reluctant to disclose their offending histories for a variety of psychosocial and legal reasons. The polygraph has shown promise as a intervention for eliciting admissions of past sexual offending behaviors. For 60 adult male sexual offender (35 inmates and 25 parolees), the number of victims and offenses were recorded from the Presentence Investigative Report, Sexual History Disclosure form, and 2 consecutive polygraph examination reports. Dramatic increases in the number of admitted victims and offenses were found for inmates, but not for parolees, across each source. However, there was a substantial decline in the number of victim and offense admissions by the second polygraph examination for both groups, even though 80% of the examination results reveled deception about sexual offending behaviors. Standardized use of sanctions and privileges for deceptive and nondeceptive polygraph results, respectively, are proposed as a way of eliciting full disclosure of offending histories for these offenders.

Adult↗

PubMed2005

Post-conviction sex offender polygraph examination: client-reported perceptions of utility and accuracy.

Post-conviction polygraph testing of adult sex offenders in treatment has been a somewhat controversial subject. This study (n = 95 participants who took 333 polygraph tests) explored how sexual offenders enrolled in outpatient treatment programs perceived their polygraph experience. Participants reported a relatively low incidence of false indications of both deception (22 of 333 tests) and truthfulness (11 of 333) tests, suggesting that clients agreed with examiners' opinions 90% of the time. The majority of clients reported that polygraph testing was a helpful part of treatment. Finally, about 5% of participants reported that they responded to allegedly inaccurate accusations of deception by admitting to things they had not done. The data offer encouragement for continued but cautious use of polygraphs by sex offender treatment programs. Implications for practice and research are identified.

Adult↗

PubMed1996

Detection of faking on the MMPI-2: differentiation among faking-bad, denial, and claiming extreme virtue.

The purpose of this study was (a) to evaluate the ability of the existing validity indices of the Minnesota Multiphasic Personality Inventory (MMPI-2) in detecting faking. bad and faking-good profiles, (b) to differentiate between two strategies for faking-good (denial and claiming extreme virtue), (c) to determine the effectiveness of the new MMPI-2 validity scale, the S scale, in detecting people's tendency to present themselves in a superlative manner, and (d) to explore the response strategy under conditions in which individuals we known to be distorting their responses to the MMPI-2 Participants were 167 undergraduate, college students who were administered the test under different conditions, and 50 hospitalized, psychiatric patients. Mean profile configurations and optimal cutoff scores obtained in this study were similar to those reported in previous studies. Accurate identification of faked profiles was achieved. The new S scale and its subscales, especially S2 (Serenity), S3 (Contentment With Life), and S5 (Denial of Moral Flaws), showed particular promise in detecting faking-good (denial and claiming extreme virtue) profiles, Participant's debriefing provided valuable information about the participants' understanding of the instructions and their deception strategies. The attempts to differentiate between two strategies for faking-good, denial and claiming extreme virtue, were not successful, However, these results should not be taken to indicate that the particular strategies assessed in this study cannot be differentiated. Methodological issues reviewed suggest that further research might yield more understanding of the nature of any deception efforts made by respondents. In addition, future, research is needed to discover if the findings from this study generalize to other clinical settings and populations.

Journal Article↗

PubMed2004

Ants visit nectaries of Epidendrum denticulatum (Orchidaceae) in a Brazilian rainforest: effects on herbivory and pollination.

Epidendrum denticulatum (Orchidaceae) produces nectar on the petioles of buds, flowers, and fruits (extrafloral nectaries) but no nectar is found on its flowers, and it is probably a deceptive species. In the Brazilian Atlantic rainforest, some aspects of both the ecology and behavior of Camponotus sericeiventris (Formicinae) and Ectatomma tuberculatum (Ponerinae), two ant species foraging on E. denticulatum extrafloral nectaries, were investigated. Both experiments, using termites as baits and field observations, suggest that these ant species are able to prevent reproductive organ herbivory, without affecting pollinator behaviour. Since a low fruit set is often cited as a characteristic of the family, especially for deceptive species, ants attracted to orchid inflorescences protect reproductive structures and increase the probability of pollination success. Epidendrum denticulatum flowers were visited and probably pollinated by Heliconius erato (Nymphalidae) and Euphyes leptosema (Hesperiidae).

Animals↗

PubMed2005

Effects of antismoking advertising--based beliefs on adult smokers' consideration of quitting.

OBJECTIVES: We examined whether specific antismoking advertising-based beliefs regarding the addictiveness of smoking, the dangers of environmental tobacco smoke, and the tobacco industry's use of deceptive advertising practices are associated with adult smokers' consideration of quitting. We also assessed whether interactions between such beliefs and having children living in the home were associated with consideration of quitting. METHODS: We used analyses of smokers' responses to a telephone survey conducted after completion of the Wisconsin Anti-Tobacco Media Campaign to test hypotheses associated with our study objectives. RESULTS: Results indicated that advertising-based beliefs regarding smoking addictiveness and the dangers of environmental tobacco smoke were associated with consideration of quitting. The findings also showed that consideration of quitting was positively affected by the interaction between number of children living at home and advertising-based beliefs about deceptive tobacco industry advertising practices designed to induce people to smoke. CONCLUSIONS: Creating advertisements that target specific antismoking beliefs may be the most effective approach to enhancing consideration of quitting among adult smokers, particularly those with children living at home.

Adult↗

PubMed2006

Positive illusions: positively correlated with subjective well-being, negatively correlated with a measure of personal growth.

Psychologists have long debated the benefits and costs of self-deceptive enhancement or positive illusions. Accurate perception of reality is central to the definitions of mental health proposed by many personality and clinical psychologists, but Taylor and Brown have suggested that having positive illusions is associated with increased happiness and satisfaction with life. One explanation for the conflicting assertions is that mental health, broadly defined, includes both subjective well-being and personal growth, distinguishable factors which are differentially related to positive illusions. For this study, 81 college students completed measures of positive illusions (Balanced Inventory of Desirable Responding Self-deceptive Positivity and How I See Myself Questionnaire), subjective well-being (Satisfaction With Life Scale and Existential Anxiety Scale), and moral reasoning (Defining Issues Test) as an index of personal growth. As predicted, positive illusion composite scores were positively correlated with scores on the subjective well-being composite (r=.40) but negatively correlated with Defining Issues Test scores (r=-.25). The quadratic relationship between these measures of positive illusion and subjective well-being composites was not significant, indicating no support for an "optimal margin of illusion."

Adult↗