Synchronous chat rooms have been used to support students’ collaborative learning. However, little work has empirically studied its relationship with students’ sense of community and furthermore the role of personality in affecting students’ chat room behavior. In this paper, we report results of a user experiment (with 489 students). We find that students who have actively used chat room posse...

Synchronous communication using text chat—often combined with a shared whiteboard—is increasingly used in CSCL. This form of interaction and learning in small online groups of students presents novel challenges, both for the participating students and for researchers studying their work. Chats differ from talk-in-interaction since the composition, posting and visual inspection of text and graph...

We describe some common problems experienced by users of computer-based text chat, and show how many of these problems relate to the loss of timing-specific information. We suggest that thinking of chat as a streaming media data type might solve some of these problems. We then present a number of alternative chat interfaces along with results from user studies comparing and contrasting them bot...

We report a major revision of the CHecklist for Autism in Toddlers (CHAT). This quantitative CHAT (Q-CHAT) contains 25 items, scored on a 5 point scale (0-4). The Q-CHAT was completed by parents of n = 779 unselected toddlers (mean age 21 months) and n = 160 toddlers and preschoolers (mean age 44 months) with an Autism Spectrum Condition (ASC). The ASC group (mean (SD) = 51.8 (14.3)) scored hig...

We present a conversation analysis of openings sequences of online text-based chat counseling. Particular about this chat counseling is that the clients made available their help question through pre-screening. The data consisted of 40 chat sessions with pre-screening and 34 sessions without pre-screening from the Dutch alcohol and drugs chat service. In the chat sessions with pre-screening, th...

The perinuclear zone (PNZ) of the supraoptic nucleus (SON) contains some GABAergic and cholinergic neurons thought to innervate the SON proper. In mice expressing enhanced green fluorescent protein (eGFP) in association with glutamate decarboxylase (GAD)65 we found an abundance of GAD65-eGFP neurons in the PNZ, whereas in mice expressing GAD67-eGFP, there were few labeled PNZ neurons. In mice e...

Chat tools are nowadays an integral part of many collaborative e-learning environments. However, standard chat tools suffer from important coordination and coherence deficiencies. In this paper we propose an open source generic framework for building malleable structured chat applications. Users can strengthen or relax constraints when they want during a chat session. The paper shows some demon...