Could Seals Prevent Cod Recovery in the Baltic Sea?

Fish populations are increasingly affected by multiple human and natural impacts including exploitation, eutrophication, habitat alteration and climate change. As a result many collapsed populations may have to recover in ecosystems whose structure and functioning differ from those in which they were formerly productive and supported sustainable fisheries. Here we investigate how a cod (Gadus morhua) population in the Baltic Sea whose biomass was reduced due to a combination of high exploitation and deteriorating environmental conditions might recover and develop in the 21st century in an ecosystem that likely will change due to both the already started recovery of a cod predator, the grey seal Halichoerus grypus, and projected climate impacts. Simulation modelling, assuming increased seal predation, fishing levels consistent with management plan targets and stable salinity, shows that the cod population could reach high levels well above the long-term average. Scenarios with similar seal and fishing levels but with 15% lower salinity suggest that the Baltic will still be able to support a cod population which can sustain a fishery, but biomass and yields will be lower. At present knowledge of cod and seal interactions, seal predation was found to have much lower impact on cod recovery, compared to the effects of exploitation and salinity. These results suggest that dual management objectives (recovery of both seal and cod populations) are realistic but success in achieving these goals will also depend on how climate change affects cod recruitment

The adaptation of the Affective Norms for English Words (ANEW) for European Portuguese

This study presents the adaptation of the Affective Norms for English Words (ANEW; Bradley & Lang, 1999a) for European Portuguese (EP). The EP adaptation of the ANEW was based on the affective ratings made by 958 college students who were EP native speakers. Participants assessed about 60 words by considering the affective dimensions of valence, arousal, and dominance, using the Self-Assessment Manikin (SAM) in either a paper-and-pencil and a web survey procedures. Results of the adaptation of the ANEW for EP are presented. Furthermore, the differences between EP, American (Bradley & Lang, 1999a), and Spanish (Redondo, Fraga, Padrón, & Comesaña, 2007) standardizations were explored. Results showed that the ANEW words were understood in a similar way by EP, American, and Spanish subjects, although some sex and cross-cultural differences were observed. The EP adaptation of the ANEW is shown to be a valid and useful tool that will allow researchers to control and/or manipulate the affective properties of stimuli as well as to develop cross-linguistic studies. The normative values of EP adaptation of the ANEW can be downloaded at http://brm.psychonomic-journals.org/content/supplemental.COMPETE - Programa Operacional Factores de CompetitividadeFundo Europeu de Desenvolvimento Regional - FEDERQuadro de Referência Estratégico Nacional - QRENFundação para a Ciência e a Tecnologia (FCT) - research project “Procura Palavras (P-Pal ): A software program for deriving objective and subjective psycholinguistic indices for European Portuguese words

Mind-reading ability: Beliefs and performance

Every adult possesses and uses to a various extent, a powerful tool, a theory of mind. The ability to recognize emotions, intentions, and thoughts of others is an important component of social competence. The use of personality questionnaires implies that people are aware of their personality traits, experienced emotions, values, and attitudes. Therefore, it is reasonable to expect that a normal adult is aware of his or her mind-reading abilities and can estimate, in relation to the others, how good he or she is at judging other person’s traits, states of mind, emotions, and intentions. In this study we have demonstrated that a person’s beliefs about their own mind-reading ability forms a single and unitary dimension. If a person believes that he or she is competent in forming judgments about another person’s personality traits then he or she has a relatively high opinion of their abilities to read another person’s thoughts and emotions. However, the results of our research show that the self-reported mind-reading ability was not correlated with actual performance. Those who believe that they are good at reading others’ minds are generally neither (1) significantly better than the others in recognition of emotions expressed in face or speech, nor (2) superior in their estimation of the personality traits of a stranger. The self-reported mind-reading ability was correlated with personality traits but not with psychometrically measured intelligence. On the contrary, the actual mind-reading performance was correlated with IQ scores. It is discussed why individuals are relatively accurate in estimation of their own personality but lack metaknowledge about their mind-reading abilities