Abstract
The Observer was originally developed as a manual event recorder for the collection, management, analysis, and presentation of observational data in animals. Because of the flexibility of later versions, it became clear that The Observer was suitable for almost any study involving collection of observational data in both animals and humans. Furthermore, the most recent version of The Observer (The Observer XT) allows the integration and synchronization of multimodal signals from various sources, such as observational, video, tracking, and physiological data. This article describes how The Observer XT was used to integrate and synchronize video, observational, tracking, and physiological data from an experiment carried out in 2001 at the Wageningen Institute of Animal Sciences of Wageningen University and Research Centre. The integration and synchronization of these multimodal signals in The Observer XT allows the user to draw a more complete picture of the phenomena under study.
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Abrahams, B. S., Kwok, M. C. H., Trinh, E., Budaghzadeh, S., Hossain, S. M., & Simpson, E. M. (2005). Pathological aggression in “fierce” mice corrected by human nuclear receptor 2E1. Journal of Neuroscience, 25, 6263–6270.
Bolhuis, J. E., Parmentier, H. K., Schouten, W. G. P., Schrama, J. W., & Wiegant, V. M. (2003). Effects of housing and individual coping characteristics on immune responses of pigs. Physiology & Behavior, 79, 289–296.
Bolhuis, J. E., Schouten, W. G. P., De Leeuw, J. A., Schrama, J. W., & Wiegant, V. M. (2004). Individual coping characteristics, rearing conditions and behavioural flexibility in pigs. Behavioural Brain Research, 152, 351–360.
Bolhuis, J. E., Schouten, W. G. P., Schrama, J. W., & Wiegant, V. M. (2005a). Behavioural development of pigs with different coping characteristics in barren and substrate-enriched housing conditions. Applied Animal Behaviour Science, 93, 213–228.
Bolhuis, J. E., Schouten, W. G. P., Schrama, J. W., & Wiegant, V. M. (2005b). Individual coping characteristics, aggressiveness and fighting strategies in pigs. Animal Behaviour, 69, 1085–1091.
Driessen, B., Peeters, E., & Geers, R. (2008). Influence of olfactory substances on the heart rate and lying behaviour of pigs during transport simulation. Animal Welfare, 17, 155–160.
Gols, R., Bukovinszky, T., Hemerik, L., Harvey, J. A., Van Lenteren, J. C., & Vet, L. E. M. (2005). Reduced foraging efficiency of a parasitoid under habitat complexity: Implications for population stability and species coexistence. Journal of Animal Ecology, 74, 1059–1068.
Hessing, M. J. C., Hagelsø, A. M., Schouten, W. G. P., Wiepkema, P. R., & Van Beek, J. A. M. (1994). Individual behavioral and physiological strategies in pigs. Physiology & Behavior, 55, 39–46.
Hessing, M. J. C., Hagelsø, A. M., Van Beek, J. A. M., Wiepkema, P. R., Schouten, W. G. P., & Krukow, R. (1993). Individual behavioural characteristics in pigs. Applied Animal Behaviour Science, 37, 285–295.
Innes, L., & McBride, S. (2008). Negative versus positive reinforcement: An evaluation of training strategies for rehabilitated horses. Applied Animal Behaviour Science, 112, 357–368.
James, N., Mellalieu, S. D., & Jones, N. M. P. (2005). The development of position-specific performance indicators in professional rugby union. Journal of Sports Sciences, 23, 63–72.
Kaikkonen, A., Kekäläinen, A., Cankar, M., Kallio, T., & Kankainen, A. (2005). Usability testing of mobile applications: A comparison between laboratory and field testing. Journal of Usability Studies, 1, 4–16.
Koolhaas, J. M., Korte, S. M., De Boer, S. F., Van der Vegt, B. J., Van Reenen, C. G., Hopster, H., et al. (1999). Coping styles in animals: Current status in behavior and stress-physiology. Neuroscience & Biobehavioral Reviews, 23, 925–935.
Marlier, L., & Schaal, B. (2005). Human newborns prefer human milk: Conspecific milk odor is attractive without postnatal exposure. Child Development, 76, 155–168.
Morrison, R. S., Hemsworth, P. H., Cronin, G. M., & Campbell, R. G. (2003). The social and feeding behaviour of growing pigs in deep-litter, large group housing systems. Applied Animal Behaviour Science, 82, 173–188.
Noldus, L. P. J. J. (1991). The Observer: A software system for collection and analysis of observational data. Behavior Research Methods, Instruments, & Computers, 23, 415–429.
Parker, R., Watson, R., Wells, E., Brown, S., Nicol, Q., & Knowles, T. (2004). The effect of blindfolding horses on heart rate and behaviour during handling and loading onto transport vehicles. Animal Welfare, 13, 433–437.
Pilz, K. M., Quiroga, M., Schwabl, H., & Adkins-Regan, E. (2004). European starling chicks benefit from high yolk testosterone levels during a drought year. Hormones & Behavior, 46, 179–192.
Ruis, M. A. W., Te Brake, J. H. A., Van de Burgwal, J. A., De Jong, I. C., Blokhuis, H. J., & Koolhaas, J. M. (2000). Personalities in female domesticated pigs: Behavioral and physiological indications. Applied Animal Behaviour Science, 66, 31–47.
Schmied, C., Waiblinger, S., Scharl, T., Leisch, F., & Boivin, X. (2008). Stroking of different body regions by a human: Effects on behaviour and heart rate of dairy cows. Applied Animal Behaviour Science, 109, 25–38.
Schouten, W. G. P. (1986). Rearing conditions and behavior in pigs. Unpublished doctoral dissertation, Wageningen Agricultural University, The Netherlands.
Valance, D., Boissy, A., Després, G., Arnould, C., Galand, C., Favreau, A., et al. (2008). Changes in social environment induce higher emotional disturbances than changes in physical environment in quail. Applied Animal Behaviour Science, 112, 307–320.
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The authors affiliated with Noldus Information Technology have a direct financial interest in The Observer and some other software described in this article.
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Zimmerman, P.H., Bolhuis, J.E., Willemsen, A. et al. The Observer XT: A tool for the integration and synchronization of multimodal signals. Behavior Research Methods 41, 731–735 (2009). https://doi.org/10.3758/BRM.41.3.731
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DOI: https://doi.org/10.3758/BRM.41.3.731