Throughout northern Europe, thousands of burial mounds were erected in the third millennium BCE. Starting in the Corded Ware culture, individual people were being buried underneath these mounds,... Show moreThroughout northern Europe, thousands of burial mounds were erected in the third millennium BCE. Starting in the Corded Ware culture, individual people were being buried underneath these mounds, often equipped with an almost rigid set of grave goods. This practice continued in the second half of the third millennium BCE with the start of the Bell Beaker phenomenon. In large parts of Europe, a ‘typical’ set of objects was placed in graves, known as the ‘Bell Beaker package’. This book focusses on the significance and meaning of these Late Neolithic graves. Why were people buried in a seemingly standardized manner, what did this signify and what does this reveal about these individuals, their role in society, their cultural identity and the people that buried them? By performing in-depth analyses of all the individual grave goods from Dutch graves, which includes use-wear analysis and experiments, the biography of grave goods is explored. How were they made, used and discarded? Subsequently the nature of these graves themselves are explored as contexts of deposition, and how these are part of a much wider ‘sacrificial landscape’. A novel and comprehensive interpretation is presented that shows how the objects from graves were connected with travel, drinking ceremonies and maintaining long-distance relationships. Show less
Speech sound categorization in birds seems in many ways comparable to that by humans, but it is unclear what mechanisms underlie such categorization. To examine this, we trained zebra finches and... Show moreSpeech sound categorization in birds seems in many ways comparable to that by humans, but it is unclear what mechanisms underlie such categorization. To examine this, we trained zebra finches and humans to discriminate two pairs of edited speech sounds that varied either along one dimension (vowel or speaker sex) or along two dimensions (vowel and speaker sex). Sounds could be memorized individually or categorized based on one dimension or by integrating or combining both dimensions. Once training was completed, we tested generalization to new speech sounds that were either more extreme, more ambiguous (i.e., close to the category boundary), or within-category intermediate between the trained sounds. Both humans and zebra finches learned the one-dimensional stimulus-response mappings faster than the two-dimensional mappings. Humans performed higher on the trained, extreme and within-category intermediate test-sounds than on the ambiguous ones. Some individual birds also did so, but most performed higher on the trained exemplars than on the extreme, within-category intermediate and ambiguous test-sounds. These results suggest that humans rely on rule learning to form categories and show poor performance when they cannot apply a rule. Birds rely mostly on exemplar-based memory with weak evidence for rule learning. Show less
