When and why we ostracize others: Motivated social exclusion in group contexts.

Research on ostracism has mostly focused on ostracized targets' reactions to being excluded and ignored. In contrast, the ostracizing sources' perspective and reasons for why individuals decide to ostracize others are still a largely unexplored frontier for empirical research. We propose two fundamental motives situated in the target's behavior that drive motivated ostracism decisions for the benefit of one's group: A perceived norm violation of the target and perceived expendability of the target for achieving group goals. Two survey studies and five experiments (total N = 2,394, all preregistered) support our predictions: When asked to recall a recent ostracism decision and the motives for it, participants reported both perceived norm violations and/or expendability of the target as motives (Study 1). Switching to the target perspective, the frequency of experienced ostracism was associated with both self-perceived norm violations and expendability (Study 2). In five experiments (Studies 3-7), participants consistently choose to ostracize targets more often when they perceived them to be either norm-violating, or inept in a skill important for the group and thus expendable. Additionally, Studies 5-7 show that strategic considerations about the requirements of the situational context influence ostracism decisions: Participants were more likely to ostracize norm-violating targets in cooperative contexts, and more likely to ostracize inept targets in performance contexts. Results have strong theoretical implications for research on ostracism and group dynamics, as well as for interventions targeting ostracism behavior: Particularly, adjusting the requirements of the situational context might be a viable option to decrease ostracism and promote inclusion in groups. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Interdigitation of bilayers from ether lipid analogs: (R)-PAF, (R)-Lyso-PAF and the antineoplastic (R)-ET-18-OMe.

The ether lipid analogs (R)-PAF, (R)-ET-18-OMe and (R)-Lyso-PAF can form bilayers. Using differential scanning calorimetry (DSC) and small angle X-ray diffraction, we have investigated bilayers formed entirely of these molecules. Small angle X-ray diffraction experiments strongly indicated that these bilayers are interdigitated at 98% relative humidity in the gel phase. The slight differences in the structures of the ether lipids affect their thermal behavior and packing properties. Of the three, (R)-Lyso-PAF shows the highest phase transition temperature, broadest phase transition peak and smallest enthalpy change. These characteristics may be attributed to hydrogen bonding of the -OH group at sn-2 position of its glycerol backbone to water or to other (R)-Lyso-PAF molecules. The interdigitated structure shows that these bilayers are similar to lipid bilayers and suggests that these molecules could easily insert themselves into membranes to reach their respective active sites or to perturb the membranes. The packing and thermal characteristics of (R)-Lyso-PAF may help explain its biological inactivity.

Specific major mental disorders and criminality: a 26-year prospective study of the 1966 northern Finland birth cohort.

OBJECTIVE: The purpose of the study was to examine the quantitative risk of criminal behavior associated with specific mental disorders. METHOD: An unselected 1966 birth cohort (N = 12,058) in Northern Finland was prospectively studied until the end of 1992. The investigation started during the mothers' pregnancy, and the data on the subjects' family characteristics, mental and physical development, living habits, psychiatric morbidity, and criminal records were gathered at various times. RESULTS: The prevalence of offenses was the highest among males with alcohol-induced psychoses and male schizophrenic subjects with coexisting alcohol abuse, and more than half of the schizophrenic offenders also had problems with alcohol. Eleven (7%) of the 165 subjects who committed violent crimes were diagnosed as psychotic. Male schizophrenic subjects had a moderately high risk for violent offenses, but the risk for other types of crimes was not elevated significantly. Odds ratios for criminal behavior were adjusted according to the socioeconomic status of the childhood family and were the same as or slightly lower than the crude odds ratios for all disorders except schizophrenia and mood disorders with psychotic features. CONCLUSIONS: The results indicate that the risk of criminal behavior was significantly higher among subjects with psychotic disorders, even though the socioeconomic status of the childhood family was controlled. The higher risk for violent behavior was associated especially with alcohol-induced psychoses and with schizophrenia with coexisting substances abuse. The results suggest that schizophrenia without substance abuse may also be associated with a higher risk of offenses, but this finding is tentative and requires further investigation.

Randomized controlled trial of motivational interviewing, cognitive behavior therapy, and family intervention for patients with comorbid schizophrenia and substance use disorders.

OBJECTIVE: Comorbidity of substance abuse disorders with schizophrenia is associated with a greater risk for serious illness complications and poorer outcome. Methodologically sound studies investigating treatment approaches for patients with these disorders are rare, although recommendations for integrated and comprehensive treatment programs abound. This study investigates the relative benefit of adding an integrated psychological and psychosocial treatment program to routine psychiatric care for patients with schizophrenia and substance use disorders. METHOD: The authors conducted a randomized, single-blind controlled comparison of routine care with a program of routine care integrated with motivational interviewing, cognitive behavior therapy, and family or caregiver intervention. RESULTS: The integrated treatment program resulted in significantly greater improvement in patients' general functioning than routine care alone at the end of treatment and 12 months after the beginning of the study. Other benefits of the program included a reduction in positive symptoms and in symptom exacerbations and an increase in the percent of days of abstinence from drugs or alcohol over the 12-month period from baseline to follow-up. CONCLUSIONS: These findings demonstrate the effectiveness of a program of routine care integrated with motivational interviewing, cognitive behavior therapy, and family intervention over routine psychiatric care alone for patients with comorbid schizophrenia and alcohol or drug abuse or dependence.

Gene-environment interaction in vulnerability to schizophrenia: findings from the Finnish Adoptive Family Study of Schizophrenia.

OBJECTIVE: This study assessed the interaction of genetic risk and rearing-family risk as a subsyndromal test measure of schizophrenic thought disorder in adoptees. METHOD: A group of 58 adoptees with schizophrenic biological mothers was compared with 96 comparison adoptees at ordinary genetic risk; putative adoptee vulnerability was assessed blindly and reliably by using the Rorschach Index of Primitive Thought. Environmental risk was measured by using frequency of communication deviance as a continuous variable, scored independently from Rorschach assessments of the adoptive parents. RESULTS: High genetic risk in itself was not associated with greater vulnerability to schizophrenic thought disorder in the adoptees, as indicated by the Index of Primitive Thought. Also, greater communication deviance in the adoptive parents was not associated with greater thought disorder in the comparison adoptees. However, there was a highly significant gene-environment interaction. Among the offspring of the adoptive parents with high levels of communication deviance, a higher proportion of high-risk than comparison adoptees showed evidence of thought disorder. In contrast, among the offspring of adoptive parents with low communication deviance, a lower proportion of high-risk than comparison adoptees showed evidence of thought disorder. The distribution of communication deviance scores did not differ significantly between the adoptive parents of high-risk offspring and the adoptive parents of comparison offspring. CONCLUSIONS: The findings are consistent with genetic control of sensitivity to the environment. There is no evidence that high genetic risk of schizophrenia among offspring is associated with high levels of communication problems in rearing parents.

Association between central nervous system infections during childhood and adult onset schizophrenia and other psychoses: a 28-year follow-up.

BACKGROUND: Maternal exposure to influenza epidemics during pregnancy may increase the risk of schizophrenia in the offspring. We investigated the association between central nervous system (CNS) infections defined prospectively up to the age of 14, and later onset of schizophrenia and other psychoses in the 1966 birth cohort in Northern Finland, which covers 96% of all births in the area during that year. METHODS: Data regarding CNS infections were collected 1966-1980. Registered diagnoses of psychoses in 1982-1993 were validated on DSM-III-R criteria. RESULTS: Out of 11,017 subjects, 145 had suffered a CNS infection during childhood, 102 of them a viral infection, 76 had DSM-III-R schizophrenia and 53 some other psychosis. Four cases of schizophrenia had suffered viral CNS infection and two cases of other psychosis bacterial infection. When neurological abnormalities and father's social class were adjusted odds ratio (OR) of schizophrenia after viral CNS infection was 4.8 (95% confidence intervals [CI] : 1.6-14.0); the other significant risk factors being intelligence quotient (IQ) < 85, perinatal brain damage and male sex but not epilepsy. Similarly adjusted OR of other psychoses was 6.9 (95% CI: 1.4-32.8) after bacterial CNS infection; the other significant risk factors being IQ < 85 and severe hearing defect. Two of the live viral infections were caused by Coxsackie B5 during an epidemic in which 16 neonates were infected together. CONCLUSIONS: Central nervous system infections during childhood clearly carried an increased risk of adult onset schizophrenia or other psychoses, viral infections being important for schizophrenia, particularly Coxsackie B5 during the newborn period.

Is a child's risk of early onset schizophrenia increased in the highest social class?

In a sample from the unselected, general population Northern Finland 1966 Birth Cohort, 11017 individuals alive at the age of 16 years were studied until the age of 27. The cumulative incidence of early onset schizophrenia until 23 years was higher (1.14%; 9/792) among young persons from the highest social class or class I (determined according to father's occupation) than among children from lower social classes (0.47%; 48/10225), the difference being statistically significant (p < 0.05). The incidence of schizophrenia in the highest social class was higher than expected among girls, firstborns, children of young mothers under 30 and urban residents (p < 0.05) compared with lower social classes. When cases from the highest and other social classes were compared, there was no clear difference in background factors or clinical course. Four alcoholics, one of them also schizophrenic, were found among nine social class I fathers. The results suggest that in some families in Northern Finland, a father's professional advancement, often linked to mental disorder, may be one determinant of an increased risk of schizophrenia in the child.

Regulation of hepatic glucose output by glucose in vivo.

The effect of infusing glucose at a rate estimated to equal hepatic glucose production (2 mg/kg BW X min) was investigated in postabsorptive unrestrained miniature pigs. Glucose turnover was estimated by the use of 3-H-glucose before and during glucose infusion where the contribution of the glucose-induced hormonal changes were estimated by infusing glucose plus somatostatin with or without insulin and/or glucagon substitution. Our data give evidence for an inhibitory effect of glucose on endogenous glucose production in the postabsorptive state. This effect seems to be independent of the hormonal changes induced by glucose infusion.

The Finnish adoptive family study of schizophrenia.

A nationwide Finnish sample of index offspring given up for adoption by schizophrenic women has been compared blindly with matched controls, that is, adopted-away offspring of nonschizophrenic biologic parents. The adoptive families have been investigated directly by joint and individual interviews and psychological tests. Interviewing and testing of biologic parents is in progress. In the total sample, thus far examined, of 124 index offspring, 9 (7.3%) have become psychotic; of 147 control offspring, 2 (1.4%) have become psychotic.

Schizophrenia, alcohol abuse, and violent behavior: a 26-year followup study of an unselected birth cohort.

It has been suggested that schizophrenia and alcoholism are associated with violent behavior. But so far there are no published studies from unselected cohorts quantifying the actual risk associated with schizophrenia both with and without comorbid alcoholism. In this study, an unselected birth cohort (n = 11,017) was prospectively followed to the age of 26, and data on psychiatric disorders and crimes were collected from national registers. The odds ratios for violent offenses and recidivism were calculated for each diagnostic group. Men who abused alcohol and were diagnosed with schizophrenia were 25.2 (95% confidence interval (CI) 6.1-97.5) times more likely to commit violent crimes than mentally healthy men. The risk for nonalcoholic patients with schizophrenia was 3.6 (95% CI 0.9-12.3) and for other psychoses, 7.7 (95% CI 2.2-23.9). None of the patients with schizophrenia who did not abuse alcohol were recidivists (> 2 offenses), but the risk for committing more crimes among alcoholic subjects with schizophrenia was 9.5-fold (95% CI 2.7-30.0). This study suggests that to prevent the crimes being committed by people with schizophrenia, it is important that clinicians watch for comorbid alcohol abuse.

Genetic and psychosocial factors in schizophrenia: the Finnish Adoptive Family Study.

A nationwide Finnish sample of schizophrenic mothers' offspring given up for adoption was compared blindly with matched controls (i.e., adopted-away offspring of nonschizophrenic biological parents). The offspring were born 1927-79. To date, a total of 247 adoptive families (112 index and 135 controls) have been investigated and rated. Of the 10 psychotic cases, 8 are offspring of schizophrenics and 2 are control offspring. However, no seriously disturbed offspring is found in a healthy or mildly disturbed adoptive family, and of those offspring who were psychotic or seriously disturbed, nearly all were reared in disturbed adoptive families. This supports the hypothesis that a possible genetic vulnerability has interacted with the adoptive rearing environment.

Long-term stability of communication deviance.

Communication deviance (CD), forms of communication that are not bizarrely thought disordered but are hard to follow and that make difficult the consensual sharing of attention and meaning, has been hypothesized as a nonspecific contributor of rearing parents to psychopathology of offspring, including schizophrenia. This hypothesis, or an alternative of genetic transmission, would gain plausibility if CD has long-term stability. CD was evaluated, using tape-recorded and reliably scored Rorschachs in 158 Finnish adoptees, and retested after a median interval of 11 years. Adolescent CD was not stably correlated with follow-up CD. However, initial CD at a mean age of 32 and follow-up CD were significantly correlated. Gender, genetic risk for schizophrenia, and DSM-III-R (American Psychiatric Association, 1987) psychiatric diagnoses had no effect on adult CD stability. CD appears to be a stable, traitlike feature of adult but not adolescent functioning.

Cue exposure as an assessment technique in the management of a heroin addict: case report.

A recently-detoxified heroin addict was exposed to a battery of drug-related stimuli which he had previously assisted in identifying as personally relevant. Skin conductance was measured during exposure to both drug-related stimuli and neutral stimulus items. The amplitude of the first skin conductance response following stimulus presentation and the number of skin conductance responses during stimulus presentation were significantly different for the drug-related and neutral stimuli. Post-exposure subjective ranking of the drug-related items differed markedly from pre-exposure ranking; and the post-exposure subjective rankings were closer to the ranked order of the measured physiological responses than the pre-exposure subjective rankings. The use of cue exposure assessment in planning treatment for relapse prevention and the possible importance of idiosyncratic cues in the environment are discussed.

Differential scanning calorimetry and small angle x-ray diffraction study of the interaction of (R)-PAF, (R)-ET-18-OME and (R)-Lyso-PAF with model membranes.

(R)-PAF, (R)-ET-18-OMe and (R)-Lyso-PAF are ether phospholipid analogs exhibiting different biological activities. All three molecules are highly lipophilic and interact with cell membranes. The manner in which their interactions occur is relevant to their biological activities and may provide information on their mechanism(s) of action at the molecular level. We have studied the interactions of (R)-PAF, (R)-ET-18-OMe and (R)-Lyso-PAF with model membranes using differential scanning calorimetry (DSC). A concentration-dependence study with DSC shows that all three analogs induce similar changes in the thermotropic behavior of model membranes. All produce a slight decrease in the main phase transition temperature of DPPC bilayers (deltaTc = 0.3 to 1.4 degrees C) but have a more substantial effect on the pretransition (deltaTc = 0.8 to 4.5 degrees C). All three disorder phosphatidylcholine (PC) membranes but impart order to PC/cholesterol membranes. We have used small angle x-ray diffraction experiments to supplement the DSC evidence on the topography of the ether lipid analogs in the bilayers. All three appear to insert themselves in the bilayer with their long chain parallel with the membrane bilayer chains.

Single crystal X-ray structures of the two 4-heptadecyl derivatives of (1R,5S)-3,6,8-trioxabicyclo[3.2.1]octane.

The single crystal structures of the two diastereomeric 4-heptadecyl derivatives of (1R,5S)-3,6,8-trioxabicyclo[3.2.1]octane have been determined by X-ray diffraction to be (1R,4R,5S)-heptadecyl-3,6,8-trioxabicyclo[3.2.1]octane (I) and (1R,4S,5S)-4-heptadecyl[3,6,8-trioxabicyclo[3.2.1]octane (II), respectively, which have an exo or axial 4-heptadecyl group, and an endo or equatorial 4-heptadecyl group, respectively. The structures of I and II had been suggested by their phase-sensitive 2D NOESY 1H-NMR spectra, but are now established unambiguously. These optically pure non-ionic lipid-like amphipathic molecules (I and II) represent the first 3,6,8-trioxabicyclo[3.2.1]octanes for which single crystal structures have been solved. Crystals of both isomer I and isomer II were orthorhombic with space group P2(1)2(1)2(1), and had unit cell dimensions of a = 9.586, b = 43.14, c = 5.289 A, and a = 7.34, b = 51.8, c = 5.636 A, respectively. The structures of I and II were both solved by using direct methods to R = 0.045 and R = 0.086, respectively. Both I and II pack in stacked bilayers with interdigitating and tilting hydrocarbon chains. The molecular and hydrocarbon cross sections are I: S = 50.70 A2, sigma = 19.00 A2; and II: S = 41.37 A2, sigma = 18.26 A2.

Community placement of long-stay psychiatric patients in northern Finland.

Rapid deinstitutionalization occurred in Finland in the 1990s, a decade later than in many other Western countries. A four-year follow-up study in northern Finland examined community placements of 253 long-stay psychiatric inpatients after deinstitutionalization in 1992 and at follow-up at the end of 1995. About 70 percent of the patients were discharged. Only 15 percent were able to live outside the hospital without continuous support. No patient was homeless at follow-up. Being unmarried, living in the city of Oulu, and having greater severity of illness were associated with hospitalization at follow-up. The results showed that long-stay patients are dependent on considerable support. Alternative residential facilities have made deinstitutionalization possible.

Occurrence and concentrations of polycyclic aromatic hydrocarbons in semipermeable membrane devices and clams in three urban streams of the Dallas-Fort Worth Metropolitan Area, Texas.

Semipermeable membrane devices (SPMDs) and Asiatic clams, Corbicula fluminea (MüLLER), were deployed at stream sites in the Dallas-Fort Worth Metropolitan Area to assess the presence of bioavailable, dissolved polycyclic aromatic hydrocarbons (PAHs). Twenty-four PAHs were detected in SPMDs, 20 of which occurred at all sites. Only three PAHs were detected in the co-deployed clams. Throughout all sites, non-alkylated PAHs were found at greater levels in SPMDs than alkylated forms. Nine of 16 Priority Pollutant PAHs were detected in SPMDs. Estimated concentrations of PAHs in water were generally two to three orders of magnitude less than standard minimum analytical reporting levels; however, for benz (a) anthracene, benzo (a) pyrene, and chrysene, estimated concentrations in water exceeded the U.S. Environmental Protection Agency's human health criteria for these carcinogens in water and aquatic organisms.

Accuracy of register-based schizophrenia diagnoses in a genetic study.

In order to assess the accuracy of schizophrenia diagnoses for genetic studies, we identified all schizophrenia patients (n = 492) in an isolated community with a diagnosis of schizophrenia in the Finnish Hospital Discharge Register (HDR) between 1969-1991. For the accuracy study we identified a sample of 73 patients from registers with Diagnostic and Statistical Manual (DSM)-III-R for schizophrenia (codes 295.10, 295.30, 295.60, 295.90) (n = 62) or "schizophrenia spectrum" diagnoses (295.40, 295.70, 297.10, 301.20, 301.22) (n = 11). When the operational criteria (DSM-III-R) were applied by two senior researchers using information from the original mental hospital records, 93% (68/73) of the cases fulfilled criteria for schizophrenia or schizophrenia spectrum. The results demonstrate that the schizophrenia diagnoses of the registers are accurate when a broad concept of schizophrenia is applied. When using operational DSM-III-R schizophrenia criteria, eight false positive cases were found among the 62 mental hospital schizophrenia diagnoses. Consequently, there may be a need to reassess schizophrenia diagnoses depending on the purpose of the study. We also found good agreement between DSM-III-R (kappa 0.93) and operational criteria (OPCRIT) diagnostic system (kappa 0.89) diagnoses, made by one researcher, compared with operational diagnoses. This indicates the possibility for the reliable use of one of these methods alone for diagnostic reassessment. The information in the HDR on primary diagnoses and on the dates of admission and discharge was accurately transferred from the hospital records.

The Finnish adoptive family study of schizophrenia. Implications for family research.

A nationwide Finnish sample of schizophrenics' offspring given up for adoption was compared blindly with matched controls, who were adopted offspring of non-schizophrenic biological parents. The adoptive families were investigated thoroughly using joint and individual interviews and psychological tests. The biological parents were also interviewed and tested. Among the 155 index offspring, the percentage of both psychoses and other severe diagnoses (borderline syndrome and severe personality disorders) was significantly higher than in the 186 matched control adoptees. This supports a genetic hypothesis. However, notable differences between these two groups only emerged in the families which were rated as disturbed. Thus the genetic effect (i.e. the differences between high and low genetic propensity) was only manifested as a psychiatric disorder in the presence of a disturbed family environment. The impact of disturbed family relations was strongest in the presence of the appropriate genotype.

The use of videoconferencing for telepsychiatry in Finland.

Some of the first telepsychiatry experiments in Finland were carried out at the Department of Psychiatry of the University of Oulu, where videoconferencing has been used for family therapy, occupational counselling, consultation and teaching. In 1996 videoconferencing was used for a total of 249 hours, which increased to 434 hours in 1997. During 1997, 45% of the time was used for teaching, 26% for occupational counselling, consultations and therapies, 23% for training and 6% for administration (mainly testing the connections). In a survey, 37 participants rated aspects of the quality of the videoconferences on a scale from 4 (poor) to 10 (excellent). The audio quality had a mean value of 8.0 (SD 0.9), the picture quality 7.5 (SD 1.5), and the general value of the videoconference was rated 7.5 (SD 1.0). Preliminary results with telepsychiatry in Finland have been promising. Interactive videoconferencing provides an easy, fast and relatively inexpensive method of providing psychiatric services over long distances.