The following study had been developed to demonstrate language behavior in subjects that matched or demonstrated deficient language behavior like Sarah's (Premack, 1971). Two autistic children were selected as subjects. These two subjects demonstrated that children who could not normally fulfill the language behavior requirement of selecting specific words, letters, or colored stones, and arranging them in some good temporal sequence, could in fact be taught to do just that activity. In this manner, language deficient candidates more severely damaged than the subjects used by Premack in his study on language difficulties in persons who were "brain damaged,'" could be taught the parameters of syntax and semantics on a non-vocal level, and thereby fulfill the criterion for language behavior, namely that of arranging specific symbols in good temporal sequence.

The tail in mammals is an important organ, which in contrast to most vertebrae, doesn't add to the motor function of their bodies. The use of the mamals' tail is much more varied and it can fulfill many different functions. This work includes a survey of these functions and analyzes collected data concerning 553 spieces of mammals across all families. The data includes information about the length of tail, the length of body, body mass, living environment and outer signs on the anal pole of these species. The resulting analysis concludes that the tail length is dependent both on the length of the mammal's body and its living environment. Outward signs of the tail depend on its length as well as the length of the body and the living environment. Distinctive tail ending and tail base probably fulfill a communicative function. The tail is more likely to have communication than cryptic significance.

The present study focuses on functions and English translation counterparts of the Czech lexeme aby. It is a relatively frequent word in the Czech language which is described as a subordinating conjunction expressing purpose, effect, manner, and also as a particle with a number of discourse functions. The current description, however, does not seem complete and this study therefore aims to analyse its use in more detail. Lexicographic and grammatical sources served as a basis for the classification of aby as a conjunction and as a particle. After an analysis of 200 examples it soon became evident that this listing is not complete and the use of aby is more complex than originally expected. The present paper thus treats all the functions of aby and also exemplifies each of them using extracted corpus data. In the study, aby in its conjunction and particle use is firstly treated separately to analyse each of them in more depth. This analysis, consequently, provides basis to point out their common features as well as their differences. The English translational counterparts are another point of interest in the study, in particular, their adequacy, regularity, and lexicalization.