Thesis (doctoral)--Westfälische Wilhelms-Universität zu Münster, 1971. / Vita. Includes bibliographical references (p. 194-204).

Issued also as inaugural dissertation, Münster. / "Benutzte Quellen und Arbeiten": p. vii-x. "Verzeichnis der Kompositionen [Valentinis]": p. 15-20. "Verzeichnis der musiktheoretischen Schriften": p. 20-24. "Schriften nicht musikalischen Inhalts": p. 24.

The sharpnose pufferfish Canthigaster valentini is widespread over the Indo-Pacific tropical coral-reef region. The social system contains territorial male, non-territorial male, and territorial female. Territorial male always occupy a fixed territory and own several territorial females forming a harem in its territory. Previous researches were concerned about field observations or laboratory tests for agonistic respondences towards self-mirror stimuli. Research on dyad interaction is rarely seen in literature. The first objective of this study focuses on the agonistic interactions between two individuals from different combinations of the abovementioned (i.e., male-male and female-female) social categories under a more spacious laboratory condition. Characteristics for intra-individual behavioral sequences were described and compared. Besides, attentions were also paid to the possible factors (e.g., sex, social status) controlling the major aggressive display (i.e., Circling). The second objective is to conduct research on the water spitting behavior of this species that I had discovered. Factors including body size, presence of food and depth of water were tested to see if any of them is the releasing factor for this behavior. The amount of information transmitted in an intra-individual behavior sequence for a male winner was highest, whereas that for a female winner was lowest. Except for Circling, FRD, FLD, and HD were the other major aggressive behaviors. The average number of aggressive behavior in an intra-individual behavior sequence and display time for male were higher than that for female. More attacks were launched in female pairs than in male pairs. For female pairs, attacks were performed by both contestants , whereas only the winners attacked its opponent in male pairs. Male tended to launch the first attack after the longest Circling but that situation did not hold for female. Circling , a agonistic behavior nor quantitatively described in other studies, can be classified into S-type and C-type. The probability of occurrences for these two types of circling were not significant different. Cycle number was higher in the early phase of an aggressive interaction in male pairs. And male spent more time in circling during an aggressive interaction. Under the experimental setting of this study, body length did not affect the outcomes of a aggressive contest. For male pairs, ratio of body high/body length played a role in determining the outcomes. Presence of food , water depth, and movement of objects above the holding aquarium were all releasing factors for the water spitting behavior and presence of food might be the most important one.

This essay discusses the question of whether describing people in essentialist terms violates the people being object to the description. The discussion is based on Kimberley Brownlee’s argumentation which states that there exists a right against social deprivation. To speak of people in crime-related, stigmatising and negatively charged terms – such as the term “criminal” – risks reducing the individual’s identity to solely the criminal aspect, and deprive them the opportunity of creating and sustaining other identities. A person’s role as a social contributor to family members and other close relatives is made more difficult, and the creation of social bonds outside the criminal sphere diminishes. This essay also brings up the critique put forward by Laura Valentini, who states that the lack in social needs is unsatisfiable in reality, and therefore it cannot be said to be a fundamental right, as Brownlee argues. The essay develops the thesis that, even though it is impossible to guarantee everyone meaningful social relationships, it is the duty of public institutions to facilitate and support the creation of these relationships. Furthermore, the use of essentialist terms – by both journalists, as well as politicians and other people in power – inhibit individuals the opportunity to create meaningful relational bonds, which could be paramount for their development and well-being. / essentiella termer. Diskussionen baseras på Kimberley Brownlees argumentation som menar att det finns en rättighet mot socialt berövande. Att tala om människor i brottsrelaterade, stigmatiserande och negativt laddade termer – såsom termen ”kriminell” – riskerar att reducera individens identitet till endast den kriminella aspekten, och fråntar dem möjligheten att skapa och bibehålla andra identiteter. Personens roll som socialt bidragande för familjemedlemmar och andra närstående försvåras, och skapandet av sociala band utanför ett kriminellt umgänge riskerar att minskas. Uppsatsen tar också upp kritik framfört av Laura Valentini, som menar att bristandet av sociala behov inte går att tillfredsställa i praktiken och att det därför inte kan påstås vara en fundamental rättighet, såsom Brownlee hävdar. Uppsatsen driver tesen att, även om det inte går att garantera en människa betydelsefulla sociala relationer, så är det de samhälleliga institutionernas uppgift att underlätta och stödja skapandet av dessa relationer. Och användandet av essentiella termer – av såväl journalister som politiker och andra makthavare – hämmar människors möjlighet till meningsfulla relationella band, vilka är viktiga för personens utveckling och välmående.