Reliability and validity of the Padua Inventory in an Iranian population

In order to study the reliability and validity of the Padua Inventory (PI), its items were translated into Persian and then back-translated into English as suggested by Brislin, Lonner, Thorndike, Cross-cultural research methods, Wiley, New York, 1973. Using the translated version of the PI, two studies were carried out. The first study included 219 healthy participants selected from Shiraz city in Iran to examine the reliability and factorial structure of the PI via test-retest, internal consistency and principal component analysis methods. The results of this study showed good reliability for the PI and confirmed its factorial structure reported by previous studies. The second study included four groups of participants as follows: patients with obsessive-compulsive disorder (OCD), patients with anxiety disorders, patients with depressive disorder and normal individuals. The PI scores were able to differentiate between OCD patients and normal individuals, but failed to differentiate between neurotic and OCD patients. Two subscales of PI-R version of the PI (precision and washing) differentiated depressive and OCD patients.     

Suicidal attempt and psychiatric disorders in Iran

This study is part of broader research aimed to determine the lifetime prevalence and pattern of comorbidity on self-reported suicidal attempts in the general population of Iran. Overall, 25,180 subjects were interviewed, face-to-face, at home; the lifetime prevalence was 1.4% (0.9% males and 2% females). The majority of attempters were 26-55 years of age, married, more highly educated, female, retired, and lived in urban areas. Many of the attempters (45.3%) reported at least one psychiatric disorder during their lifetime; major depressive disorder (22%), panic disorder (6.3%), and obsessive compulsive disorder (6%) was the most common. Because less than half of suicidal attempters reported a psychiatric disorder, the existence of other pathways to suicide may be important foci for prevention. Many of the demographic correlates of suicidal behavior in Iran are very similar to those seen in Western cutlures; however, the sociodemographic factors such as few working women and very low levels of divorce is quite different to that of Western populations.     

Brief maternal interaction increases number, amplitude, and bout size of isolation-induced ultrasonic vocalizations in infant rats (Rattus norvegicus)

The number, amplitude, duration, and bout structure of isolation-induced ultrasonic vocalization (USV) of infant rats (Rattus norvegicus) were measured on postnatal Day 10. Measurements were made before and after a brief, 1-min, active interaction with their mother or before and after a "pick-up" control procedure. Consistent with prior studies, the number of USVs emitted was significantly increased in the period following the maternal reunion but not after the control procedure. The average amplitude of USVs was also greater following maternal reunion. Finally, analyses characterizing the bout structure of USV production indicated that the average bout size (i.e. number of USVs/bout) was increased severalfold following the reunion with the mother, accounting for the greater rate of USV production during the second isolation period.     

The role of distress tolerance in the relationship between depressive symptoms and problematic alcohol use

Empirical evidence and theory implicate the role of distress tolerance in the relationship between negative affect and alcohol use. However, limited research has been conducted to explore these relationships. As such, the purpose of this study was to examine whether distress tolerance moderates the relationship between current depressive symptoms and problematic alcohol use in a community sample of adults. Participants included 150 adults, primarily female, recruited from the local community. Problematic alcohol use was measured using the Alcohol Use Disorders Identification Test (AUDIT) total score, which is a composite measure of harmful and hazardous patterns of alcohol use and several current alcohol dependence symptoms. Distress tolerance was measured using a computerized behavioral distress tolerance task, the Computerized Paced Auditory Serial Addition Task (PASAT-C). Tobit regression analyses indicated a significant interaction between distress tolerance and depressive symptoms in predicting alcohol problems, such that depressive symptoms were significantly associated with problematic alcohol use among adults with low, but not high, distress tolerance. Thus, alcohol use interventions with a focus on distress tolerance skills in the context of depressive symptoms may be particularly effective. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Relative blindsight arises from a criterion confound in metacontrast masking: implications for theories of consciousness

Relative blindsight is said to occur when different levels of subjective awareness are obtained at equality of objective performance. Using metacontrast masking, Lau and Passingham (2006) reported relative blindsight in normal observers at the shorter of two stimulus-onset asynchronies (SOAs) between target and mask. Experiment 1 replicated the critical asymmetry in subjective awareness at equality of objective performance. We argue that this asymmetry cannot be regarded as evidence for relative blindsight because the observers' responses were based on different attributes of the stimuli (criterion contents) at the two SOAs. With an invariant criterion content (Experiment 2), there was no asymmetry in subjective awareness across the two SOAs even though objective performance was the same. Experiment 3 examined the effect of criterion level on estimates of relative blindsight. Collectively, the present results question whether metacontrast masking is a suitable paradigm for establishing relative blindsight. Implications for theories of consciousness are discussed.     

Forgiveness in relation to attachment style and consanguine marriage in Iranian married individuals

The aim of this study was to compare forgiveness in secure and insecure Iranian married couples. Whether marriage had occurred within the family (consanguine) or not (non-consanguine) was also considered. 400 married participants completed the Family Forgiveness Scale and the Adult Attachment Questionnaire. Analysis of reported forgiveness within the marital family showed that, although there was no significant difference between secure and insecure participants in overall forgiveness, secure participants rated "reparation" and "resolution" higher, whereas insecure participants rated "realization" and "recognition" higher. Comparing the experience of forgiveness in the family of origin, securely attached couples not only reported significantly more overall forgiveness but reported more "realization" and "resolution" while forgiving. Some interesting sex differences were also found, as individuals in consanguine vs non-consanguine couples differed in mean "recognition" in the forgiveness process.     

The attentional blink is not affected by backward masking of T2, T2-mask SOA, or level of T2 impoverishment

Identification of the second of two targets (T2) is impaired when presented shortly after the first (T1). This attentional blink (AB) is thought to arise from a delay in T2 processing during which T2 is vulnerable to masking. Conventional studies have measured T2 accuracy which is constrained by the 100% ceiling. We avoided this problem by using a dynamic threshold-tracking procedure that is inherently free from ceiling constraints. In two experiments we examined how AB magnitude is affected by three masking-related factors: (a) presence/absence of T2 mask, (b) T2-mask stimulus onset asynchrony (SOA), and (c) level of T2 impoverishment (signal-to-noise ratio [SNR]). In Experiment 1, overall accuracy decreased with T2-mask SOA. The magnitude of the AB, however, was invariant with SOA and with mask presence/absence. Experiment 2 further showed that the AB was invariant with T2 SNR. The relationship among mask presence/absence, SOA, and T2 SNR and the AB is encompassed in a qualitative model.     

Nonsymbolic numerical magnitude comparison: reliability and validity of different task variants and outcome measures, and their relationship to arithmetic achievement in adults

The numerical ratio effect (NRE) and the Weber fraction (w) are common metrics of the precision of the approximate numbers sense (ANS), a cognitive mechanism suggested to play a role in the development of numerical and arithmetic skills. The task most commonly used to measure the precision of the ANS is the numerical comparison task. Multiple variants of this task have been employed yet it is currently unclear how these affect metrics of ANS acuity, and how these relate to arithmetic achievement. The present study investigates the reliability, validity and relationship to standardized measures of arithmetic fluency of the NRE and w elicited by three variants of the nonsymbolic number comparison task. Results reveal that the strengths of the NRE and w differ between task variants. Moreover, the reliability and validity of the reaction time NRE and the w were generally significant across task variants, although reliability was stronger for w. None of the task variants revealed a correlation between ANS metrics and arithmetic fluency in adults. These results reveal important consistencies across nonsymbolic number comparison tasks, indicating a shared cognitive foundation. However, the relationship between ANS acuity and arithmetic performance remains unclear.     

Factorial and cross-cultural validity of a Farsi version of the Anger Rumination Scale

This study aimed to examine factorial and cross-cultural validity of a Farsi version of the Anger Rumination Scale. 933 undergraduate students (388 men, 545 women) from the University of Tehran participated. The Farsi version of the Anger Rumination Scale, the Tehran Multidimensional Anger Scale, and the Mental Health Inventory were completed by all participants. Results supported the four-factor structure, convergent and discriminant validity, internal consistency, and test-retest reliability of the Farsi version of the Anger Rumination Scale. The factors found in the Farsi version of the Anger Rumination Scale are similar to the factors found in previous studies and were accordingly labeled as Angry Afterthoughts, Thoughts of Revenge, Angry Memories, and Understanding Causes. The results also provided evidence for applicability of the Farsi version of the Anger Rumination Scale and its cross-cultural validity.