The political business cycle under rational voting behavior

This essay argues that politically motivated business cycles could persist in a democratic society even if the electorate votes in a rational, fully informed manner, provided that government policymakers have the means to systematically generate macroeconomic fluctuations. This cyclic outcome reflects the pReferences of an electorate that is composed of imperfectly altruistic voters belonging to different overlapping generations. Since each generation has a different horizon over which it would like to have elected politicians provide an optimal economic policy plan, an intergenerational conflict of interests situation arises. This conflict is placed into an explicit political context, whereby cycles become generated under the institutional constraint of periodic elections.     

Time-consistent monetary policy under output persistence

This note merges the fact that real activity is persistent with a Barro-Gordon type model of endogenous monetary policy. It shows that persistence crucially affects policy choices. This applies in non-cooperative games with a finite horizon, and in games with an infinite horizon. Always, enforceable inflation announcements move higher when output persistence increases. Policymakers who discount future utility by 10% annually produce about ten times as much inflation under near-hysteresis as in a natural-rate scenario. A change in the policymaker's time preference may affect inflation both ways, depending on present time preference and persistence.     

Death caused by "attack dog" bites. A contribution to current discussion

Two cases of fatal dog-bite incidents caused by males of the "American Staffordshire terrier" breed currently known as "fighting dogs" are reported. Both happened in elderly women, one of them handicapped. Reconstruction of the accidents revealed some peculiar characteristics of these dogs, namely the ability to attack undesirably and forcefully as well as the enormous grip of their jaws. Considerable public attention has been drawn to some breeds which seem to predominate in dog-bite statistics and are summarized as "pit bulls". For the animal behaviourist it is not justifiable to condemn only the dog and blame it solely for damage inflicted. Scientific casework has to encompass the situational background of any case and the animal's holder because there is often a close association between the character of the dog and its human counterpart. Implications of such incidents for public safety policy and forensic science are to be discussed.     

Stability and Internal Consistency of the Offer Self-Image Questionnaire: A Study of Finnish Adolescents

Reliability of the Offer Self-Image Questionnaire (OSIQ) was assessed with two measures—internal consistency and stability—in Finnish children aged 13. The OSIQ was administered to 268 normal 13-year-old pupils (129 girls and 139 boys). Three weeks later, a third of the pupils (N = 88) were randomly selected for retesting. Eighty-three teenagers completed the questionnaire in an acceptable manner. The internal consistency of the test was verified for each scale using Cronbach . To estimate the stability of the test, Pearson correlation coefficients were calculated, and the mean raw scores for each scale were compared with those in the retest. The internal consistency of the test was fairly good ( = 0.54–0.84) for the majority of scales, except for scales S5 and S12 ( = 0.30–0.41). The stability of scales S1, S4, S5, S7, and S10 was good. On the basis of these two measures, we conclude that for Finnish adolescents, the OSIQ is sufficiently reliable only with respect to scales S1, S4, S7, and S10.     

A systematic and quantitative analysis of PCR template contamination

A quantitative and systematic analysis is provided for ubiquitously present template DNA interfering with the quantification of human DNA by PCR. Two sources contributing to DNA background were identified. The first one is interpreted as DNA present in chemicals and on equipment and the second as caused by operator handling. The amounts were equivalent to 2.5 and 8.9 pg per mL of sample, and the estimated frequencies of contamination were 65 and 35%, respectively, resulting in an effective limit of detection of 17.4 pg/mL. Below this level--named effective laboratory background--a result could not be considered as authentic. Knowledge of these parameters is important for laboratories that analyze minute amounts of human DNA by PCR for purposes such as quantification, typing, and sequencing.     

Globalisation and Conceptualisation in the Sphere of International Criminal Law

Professor Wiener mentions that [w]hile an agreement has evolvedin the juris-prudence concerning the meaning of criminal law' and publicinternational law', the opinions regarding what international criminallaw is still diverge to a great extent.1 The task of this report isto clear up what we mean by international criminal law, because itis not an exact expression.     

Significance of mitochondrial DNA for forensic stain analysis, identification and forensic lineage determination

DNA testing using conventional STR systems may produce insufficient results, if the genomic DNA in the specimen is either highly degraded or the available quantity is very small (e.g. skin particles, hair shafts or ancient bones). In some of these cases the examination of mitochondrial DNA, which is present in considerably larger copy numbers in the cytoplasm, is more successful than that of nuclear DNA. Identification of unknown corpses by conventional DNA typing sometimes remains doubtful, if only samples from presumably distant relatives or putative brothers or sisters are available for comparison. Since mitochondrial DNA is generally transmitted in maternal lineages, its sequence pattern can be directly compared with those of other individuals and, in case of the same maternal lineage, corresponding sequence chromatograms are to be expected. In connection with nuclear DNA typing methods certain sequence motives may furnish clues to ethnic groups. The report presents three cases illustrating the application possibilities of mtDNA typing in forensic practice.