---
_id: '17181'
abstract:
- lang: eng
  text: The classic mapping metaphor posits that children learn a word by mapping
    it onto a concept of an object or event. However, we believe that a mapping metaphor
    cannot account for word learning, because even though children focus attention
    on objects, they do not necessarily remember the connection between the word and
    the referent unless it is framed pragmatically, that is, within a task. Our theoretical
    paper proposes an alternative mechanism for word learning. Our main premise is
    that word learning occurs as children accomplish a goal in cooperation with a
    partner. We follow Bruner's (1983) idea and further specify pragmatic frames as
    the learning units that drive language acquisition and cognitive development.
    These units consist of a sequence of actions and verbal behaviors that are co-constructed
    with a partner to achieve a joint goal. We elaborate on this alternative, offer
    some initial parametrizations of the concept, and embed it in current language
    learning approaches.
author:
- first_name: Katharina
  full_name: Rohlfing, Katharina
  id: '50352'
  last_name: Rohlfing
- first_name: Britta
  full_name: Wrede, Britta
  last_name: Wrede
- first_name: Anna-Lisa
  full_name: Vollmer, Anna-Lisa
  last_name: Vollmer
- first_name: Pierre-Yves
  full_name: Oudeyer, Pierre-Yves
  last_name: Oudeyer
citation:
  ama: 'Rohlfing K, Wrede B, Vollmer A-L, Oudeyer P-Y. An Alternative to Mapping a
    Word onto a Concept in Language Acquisition: Pragmatic Frames. <i>FRONTIERS IN
    PSYCHOLOGY</i>. 2016;7. doi:<a href="https://doi.org/10.3389/fpsyg.2016.00470">10.3389/fpsyg.2016.00470</a>'
  apa: 'Rohlfing, K., Wrede, B., Vollmer, A.-L., &#38; Oudeyer, P.-Y. (2016). An Alternative
    to Mapping a Word onto a Concept in Language Acquisition: Pragmatic Frames. <i>FRONTIERS
    IN PSYCHOLOGY</i>, <i>7</i>. <a href="https://doi.org/10.3389/fpsyg.2016.00470">https://doi.org/10.3389/fpsyg.2016.00470</a>'
  bibtex: '@article{Rohlfing_Wrede_Vollmer_Oudeyer_2016, title={An Alternative to
    Mapping a Word onto a Concept in Language Acquisition: Pragmatic Frames}, volume={7},
    DOI={<a href="https://doi.org/10.3389/fpsyg.2016.00470">10.3389/fpsyg.2016.00470</a>},
    journal={FRONTIERS IN PSYCHOLOGY}, publisher={Frontiers Media Sa}, author={Rohlfing,
    Katharina and Wrede, Britta and Vollmer, Anna-Lisa and Oudeyer, Pierre-Yves},
    year={2016} }'
  chicago: 'Rohlfing, Katharina, Britta Wrede, Anna-Lisa Vollmer, and Pierre-Yves
    Oudeyer. “An Alternative to Mapping a Word onto a Concept in Language Acquisition:
    Pragmatic Frames.” <i>FRONTIERS IN PSYCHOLOGY</i> 7 (2016). <a href="https://doi.org/10.3389/fpsyg.2016.00470">https://doi.org/10.3389/fpsyg.2016.00470</a>.'
  ieee: 'K. Rohlfing, B. Wrede, A.-L. Vollmer, and P.-Y. Oudeyer, “An Alternative
    to Mapping a Word onto a Concept in Language Acquisition: Pragmatic Frames,” <i>FRONTIERS
    IN PSYCHOLOGY</i>, vol. 7, 2016, doi: <a href="https://doi.org/10.3389/fpsyg.2016.00470">10.3389/fpsyg.2016.00470</a>.'
  mla: 'Rohlfing, Katharina, et al. “An Alternative to Mapping a Word onto a Concept
    in Language Acquisition: Pragmatic Frames.” <i>FRONTIERS IN PSYCHOLOGY</i>, vol.
    7, Frontiers Media Sa, 2016, doi:<a href="https://doi.org/10.3389/fpsyg.2016.00470">10.3389/fpsyg.2016.00470</a>.'
  short: K. Rohlfing, B. Wrede, A.-L. Vollmer, P.-Y. Oudeyer, FRONTIERS IN PSYCHOLOGY
    7 (2016).
date_created: 2020-06-24T13:00:57Z
date_updated: 2023-02-01T16:04:21Z
department:
- _id: '749'
doi: 10.3389/fpsyg.2016.00470
intvolume: '         7'
keyword:
- language acquisition
- pragmatics
- infants' social learning
- frames
- learning and memory
- developmental robotics
language:
- iso: eng
publication: FRONTIERS IN PSYCHOLOGY
publication_identifier:
  issn:
  - 1664-1078
publisher: Frontiers Media Sa
status: public
title: 'An Alternative to Mapping a Word onto a Concept in Language Acquisition: Pragmatic
  Frames'
type: journal_article
user_id: '14931'
volume: 7
year: '2016'
...
---
_id: '17199'
abstract:
- lang: eng
  text: 'Research of tutoring in parent-infant interaction has shown that tutors -
    when presenting some action - modify both their verbal and manual performance
    for the learner (‘motherese’, ‘motionese’). Investigating the sources and effects
    of the tutors’ action modifications, we suggest an interactional account of ‘motionese’.
    Using video-data from a semi-experimental study in which parents taught their
    8 to 11 month old infants how to nest a set of differently sized cups, we found
    that the tutors’ action modifications (in particular: high arches) functioned
    as an orienting device to guide the infant’s visual attention (gaze). Action modification
    and the recipient’s gaze can be seen to have a reciprocal sequential relationship
    and to constitute a constant loop of mutual adjustments. Implications are discussed
    for developmental research and for robotic ‘Social Learning’. We argue that a
    robot system could use on-line feedback strategies (e.g. gaze) to pro-actively
    shape a tutor’s action presentation as it emerges.'
author:
- first_name: Karola
  full_name: Pitsch, Karola
  last_name: Pitsch
- first_name: Anna-Lisa
  full_name: Vollmer, Anna-Lisa
  last_name: Vollmer
- first_name: Katharina
  full_name: Rohlfing, Katharina
  id: '50352'
  last_name: Rohlfing
- first_name: Jannik
  full_name: Fritsch, Jannik
  last_name: Fritsch
- first_name: Britta
  full_name: Wrede, Britta
  last_name: Wrede
citation:
  ama: 'Pitsch K, Vollmer A-L, Rohlfing K, Fritsch J, Wrede B. Tutoring in adult-child-interaction:
    On the loop of the tutor’s action modification and the recipient’s gaze. <i>Interaction
    Studies</i>. 2014;15(1):55-98. doi:<a href="https://doi.org/10.1075/is.15.1.03pit">10.1075/is.15.1.03pit</a>'
  apa: 'Pitsch, K., Vollmer, A.-L., Rohlfing, K., Fritsch, J., &#38; Wrede, B. (2014).
    Tutoring in adult-child-interaction: On the loop of the tutor’s action modification
    and the recipient’s gaze. <i>Interaction Studies</i>, <i>15</i>(1), 55–98. <a
    href="https://doi.org/10.1075/is.15.1.03pit">https://doi.org/10.1075/is.15.1.03pit</a>'
  bibtex: '@article{Pitsch_Vollmer_Rohlfing_Fritsch_Wrede_2014, title={Tutoring in
    adult-child-interaction: On the loop of the tutor’s action modification and the
    recipient’s gaze}, volume={15}, DOI={<a href="https://doi.org/10.1075/is.15.1.03pit">10.1075/is.15.1.03pit</a>},
    number={1}, journal={Interaction Studies}, publisher={John Benjamins Publishing
    Company}, author={Pitsch, Karola and Vollmer, Anna-Lisa and Rohlfing, Katharina
    and Fritsch, Jannik and Wrede, Britta}, year={2014}, pages={55–98} }'
  chicago: 'Pitsch, Karola, Anna-Lisa Vollmer, Katharina Rohlfing, Jannik Fritsch,
    and Britta Wrede. “Tutoring in Adult-Child-Interaction: On the Loop of the Tutor’s
    Action Modification and the Recipient’s Gaze.” <i>Interaction Studies</i> 15,
    no. 1 (2014): 55–98. <a href="https://doi.org/10.1075/is.15.1.03pit">https://doi.org/10.1075/is.15.1.03pit</a>.'
  ieee: 'K. Pitsch, A.-L. Vollmer, K. Rohlfing, J. Fritsch, and B. Wrede, “Tutoring
    in adult-child-interaction: On the loop of the tutor’s action modification and
    the recipient’s gaze,” <i>Interaction Studies</i>, vol. 15, no. 1, pp. 55–98,
    2014, doi: <a href="https://doi.org/10.1075/is.15.1.03pit">10.1075/is.15.1.03pit</a>.'
  mla: 'Pitsch, Karola, et al. “Tutoring in Adult-Child-Interaction: On the Loop of
    the Tutor’s Action Modification and the Recipient’s Gaze.” <i>Interaction Studies</i>,
    vol. 15, no. 1, John Benjamins Publishing Company, 2014, pp. 55–98, doi:<a href="https://doi.org/10.1075/is.15.1.03pit">10.1075/is.15.1.03pit</a>.'
  short: K. Pitsch, A.-L. Vollmer, K. Rohlfing, J. Fritsch, B. Wrede, Interaction
    Studies 15 (2014) 55–98.
date_created: 2020-06-24T13:01:17Z
date_updated: 2023-02-01T16:10:52Z
department:
- _id: '749'
doi: 10.1075/is.15.1.03pit
intvolume: '        15'
issue: '1'
keyword:
- conversation analysis
- interactional coordination
- adult-child-interaction
- feedback
- gaze
- quantification
- social learning
- motionese
- tutoring
language:
- iso: eng
page: 55-98
publication: Interaction Studies
publication_identifier:
  issn:
  - 1572-0381
publisher: John Benjamins Publishing Company
status: public
title: 'Tutoring in adult-child-interaction: On the loop of the tutor''s action modification
  and the recipient''s gaze'
type: journal_article
user_id: '14931'
volume: 15
year: '2014'
...
---
_id: '17204'
abstract:
- lang: eng
  text: 'In a longitudinal naturalistic study, we observed German mothers interacting
    with their infants when they were 3 and 6 months old. Pursuing the idea that infants’
    attention is socialized in everyday interactions, we explored whether eye contact
    is reinforced selectively by behavioral modification in the input provided to
    infants. Applying a microanalytical approach focusing on the sequential organization
    of interaction, we explored how the mother draws the infant’s attention to herself
    and how she tries to maintain attention when the infant is looking at her. Results
    showed that eye contact is reinforced by specific infant-directed practices: interrogatives
    and conversational openings, multimodal stimulation, repetition, and imitation.
    In addition, these practices are contingent on the infant’s own behavior. By comparing
    the two data points (3 and 6 months), we showed how the education of attention
    evolves hand-in-hand with the developing capacities of the infant.'
author:
- first_name: Iris
  full_name: Nomikou, Iris
  last_name: Nomikou
- first_name: Katharina
  full_name: Rohlfing, Katharina
  id: '50352'
  last_name: Rohlfing
- first_name: Joanna
  full_name: Szufnarowska, Joanna
  last_name: Szufnarowska
citation:
  ama: 'Nomikou I, Rohlfing K, Szufnarowska J. Educating attention: recruiting, maintaining,
    and framing eye contact in early natural mother-infant interactions. <i>Interaction
    Studies</i>. 2013;14(2):240-267. doi:<a href="https://doi.org/10.1075/is.14.2.05nom">10.1075/is.14.2.05nom</a>'
  apa: 'Nomikou, I., Rohlfing, K., &#38; Szufnarowska, J. (2013). Educating attention:
    recruiting, maintaining, and framing eye contact in early natural mother-infant
    interactions. <i>Interaction Studies</i>, <i>14</i>(2), 240–267. <a href="https://doi.org/10.1075/is.14.2.05nom">https://doi.org/10.1075/is.14.2.05nom</a>'
  bibtex: '@article{Nomikou_Rohlfing_Szufnarowska_2013, title={Educating attention:
    recruiting, maintaining, and framing eye contact in early natural mother-infant
    interactions}, volume={14}, DOI={<a href="https://doi.org/10.1075/is.14.2.05nom">10.1075/is.14.2.05nom</a>},
    number={2}, journal={Interaction Studies}, publisher={John Benjamins Publishing
    Company}, author={Nomikou, Iris and Rohlfing, Katharina and Szufnarowska, Joanna},
    year={2013}, pages={240–267} }'
  chicago: 'Nomikou, Iris, Katharina Rohlfing, and Joanna Szufnarowska. “Educating
    Attention: Recruiting, Maintaining, and Framing Eye Contact in Early Natural Mother-Infant
    Interactions.” <i>Interaction Studies</i> 14, no. 2 (2013): 240–67. <a href="https://doi.org/10.1075/is.14.2.05nom">https://doi.org/10.1075/is.14.2.05nom</a>.'
  ieee: 'I. Nomikou, K. Rohlfing, and J. Szufnarowska, “Educating attention: recruiting,
    maintaining, and framing eye contact in early natural mother-infant interactions,”
    <i>Interaction Studies</i>, vol. 14, no. 2, pp. 240–267, 2013, doi: <a href="https://doi.org/10.1075/is.14.2.05nom">10.1075/is.14.2.05nom</a>.'
  mla: 'Nomikou, Iris, et al. “Educating Attention: Recruiting, Maintaining, and Framing
    Eye Contact in Early Natural Mother-Infant Interactions.” <i>Interaction Studies</i>,
    vol. 14, no. 2, John Benjamins Publishing Company, 2013, pp. 240–67, doi:<a href="https://doi.org/10.1075/is.14.2.05nom">10.1075/is.14.2.05nom</a>.'
  short: I. Nomikou, K. Rohlfing, J. Szufnarowska, Interaction Studies 14 (2013) 240–267.
date_created: 2020-06-24T13:01:23Z
date_updated: 2023-02-01T16:12:50Z
department:
- _id: '749'
doi: 10.1075/is.14.2.05nom
intvolume: '        14'
issue: '2'
keyword:
- interactional adaptation
- multimodal input
- social learning
- ecology of attention
- eye contact
language:
- iso: eng
page: 240-267
publication: Interaction Studies
publication_identifier:
  issn:
  - 1572-0381
publisher: John Benjamins Publishing Company
status: public
title: 'Educating attention: recruiting, maintaining, and framing eye contact in early
  natural mother-infant interactions'
type: journal_article
user_id: '14931'
volume: 14
year: '2013'
...
---
_id: '17246'
author:
- first_name: Iris
  full_name: Nomikou, Iris
  last_name: Nomikou
- first_name: Katharina
  full_name: Rohlfing, Katharina
  id: '50352'
  last_name: Rohlfing
citation:
  ama: 'Nomikou I, Rohlfing K. Language Does Something: Body Action and Language in
    Maternal Input to Three-Month-Olds. <i>IEEE Transactions on Autonomous Mental
    Development</i>. 2011;3(2):113-128. doi:<a href="https://doi.org/10.1109/TAMD.2011.2140113">10.1109/TAMD.2011.2140113</a>'
  apa: 'Nomikou, I., &#38; Rohlfing, K. (2011). Language Does Something: Body Action
    and Language in Maternal Input to Three-Month-Olds. <i>IEEE Transactions on Autonomous
    Mental Development</i>, <i>3</i>(2), 113–128. <a href="https://doi.org/10.1109/TAMD.2011.2140113">https://doi.org/10.1109/TAMD.2011.2140113</a>'
  bibtex: '@article{Nomikou_Rohlfing_2011, title={Language Does Something: Body Action
    and Language in Maternal Input to Three-Month-Olds}, volume={3}, DOI={<a href="https://doi.org/10.1109/TAMD.2011.2140113">10.1109/TAMD.2011.2140113</a>},
    number={2}, journal={IEEE Transactions on Autonomous Mental Development}, publisher={Institute
    of Electrical &#38; Electronics Engineers (IEEE)}, author={Nomikou, Iris and Rohlfing,
    Katharina}, year={2011}, pages={113–128} }'
  chicago: 'Nomikou, Iris, and Katharina Rohlfing. “Language Does Something: Body
    Action and Language in Maternal Input to Three-Month-Olds.” <i>IEEE Transactions
    on Autonomous Mental Development</i> 3, no. 2 (2011): 113–28. <a href="https://doi.org/10.1109/TAMD.2011.2140113">https://doi.org/10.1109/TAMD.2011.2140113</a>.'
  ieee: 'I. Nomikou and K. Rohlfing, “Language Does Something: Body Action and Language
    in Maternal Input to Three-Month-Olds,” <i>IEEE Transactions on Autonomous Mental
    Development</i>, vol. 3, no. 2, pp. 113–128, 2011, doi: <a href="https://doi.org/10.1109/TAMD.2011.2140113">10.1109/TAMD.2011.2140113</a>.'
  mla: 'Nomikou, Iris, and Katharina Rohlfing. “Language Does Something: Body Action
    and Language in Maternal Input to Three-Month-Olds.” <i>IEEE Transactions on Autonomous
    Mental Development</i>, vol. 3, no. 2, Institute of Electrical &#38; Electronics
    Engineers (IEEE), 2011, pp. 113–28, doi:<a href="https://doi.org/10.1109/TAMD.2011.2140113">10.1109/TAMD.2011.2140113</a>.'
  short: I. Nomikou, K. Rohlfing, IEEE Transactions on Autonomous Mental Development
    3 (2011) 113–128.
date_created: 2020-06-24T13:02:12Z
date_updated: 2023-02-01T12:54:33Z
department:
- _id: '749'
doi: 10.1109/TAMD.2011.2140113
intvolume: '         3'
issue: '2'
keyword:
- acoustic packaging
- mother-child interaction
- social learning
- multimodal grounding in input
- ecology of interactions
- synchrony
language:
- iso: eng
page: 113-128
publication: IEEE Transactions on Autonomous Mental Development
publication_identifier:
  issn:
  - 1943-0612
publisher: Institute of Electrical & Electronics Engineers (IEEE)
status: public
title: 'Language Does Something: Body Action and Language in Maternal Input to Three-Month-Olds'
type: journal_article
user_id: '14931'
volume: 3
year: '2011'
...
---
_id: '17272'
abstract:
- lang: eng
  text: In developmental research, tutoring behavior has been identified as scaffolding
    infants' learning processes. It has been defined in terms of child-directed speech
    (Motherese), child-directed motion (Motionese), and contingency. In the field
    of developmental robotics, research often assumes that in human-robot interaction
    (HRI), robots are treated similar to infants, because their immature cognitive
    capabilities benefit from this behavior. However, according to our knowledge,
    it has barely been studied whether this is true and how exactly humans alter their
    behavior towards a robotic interaction partner. In this paper, we present results
    concerning the acceptance of a robotic agent in a social learning scenario obtained
    via comparison to adults and 8-11 months old infants in equal conditions. These
    results constitute an important empirical basis for making use of tutoring behavior
    in social robotics. In our study, we performed a detailed multimodal analysis
    of HRI in a tutoring situation using the example of a robot simulation equipped
    with a bottom-up saliency-based attention model. Our results reveal significant
    differences in hand movement velocity, motion pauses, range of motion, and eye
    gaze suggesting that for example adults decrease their hand movement velocity
    in an Adult-Child Interaction (ACI), opposed to an Adult-Adult Interaction (AAI)
    and this decrease is even higher in the Adult-Robot Interaction (ARI). We also
    found important differences between ACI and ARI in how the behavior is modified
    over time as the interaction unfolds. These findings indicate the necessity of
    integrating top-down feedback structures into a bottom-up system for robots to
    be fully accepted as interaction partners.
author:
- first_name: Anna-Lisa
  full_name: Vollmer, Anna-Lisa
  last_name: Vollmer
- first_name: Katrin Solveig
  full_name: Lohan, Katrin Solveig
  last_name: Lohan
- first_name: Kerstin
  full_name: Fischer, Kerstin
  last_name: Fischer
- first_name: Yukie
  full_name: Nagai, Yukie
  last_name: Nagai
- first_name: Karola
  full_name: Pitsch, Karola
  last_name: Pitsch
- first_name: Jannik
  full_name: Fritsch, Jannik
  last_name: Fritsch
- first_name: Katharina
  full_name: Rohlfing, Katharina
  id: '50352'
  last_name: Rohlfing
- first_name: Britta
  full_name: Wrede, Britta
  last_name: Wrede
citation:
  ama: 'Vollmer A-L, Lohan KS, Fischer K, et al. People modify their tutoring behavior
    in robot-directed interaction for action learning. In: <i>Development and Learning,
    2009. ICDL 2009. IEEE 8th International Conference on Development and Learning</i>.
    IEEE; 2009:1-6. doi:<a href="https://doi.org/10.1109/DEVLRN.2009.5175516">10.1109/DEVLRN.2009.5175516</a>'
  apa: Vollmer, A.-L., Lohan, K. S., Fischer, K., Nagai, Y., Pitsch, K., Fritsch,
    J., Rohlfing, K., &#38; Wrede, B. (2009). People modify their tutoring behavior
    in robot-directed interaction for action learning. <i>Development and Learning,
    2009. ICDL 2009. IEEE 8th International Conference on Development and Learning</i>,
    1–6. <a href="https://doi.org/10.1109/DEVLRN.2009.5175516">https://doi.org/10.1109/DEVLRN.2009.5175516</a>
  bibtex: '@inproceedings{Vollmer_Lohan_Fischer_Nagai_Pitsch_Fritsch_Rohlfing_Wrede_2009,
    title={People modify their tutoring behavior in robot-directed interaction for
    action learning}, DOI={<a href="https://doi.org/10.1109/DEVLRN.2009.5175516">10.1109/DEVLRN.2009.5175516</a>},
    booktitle={Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
    on Development and Learning}, publisher={IEEE}, author={Vollmer, Anna-Lisa and
    Lohan, Katrin Solveig and Fischer, Kerstin and Nagai, Yukie and Pitsch, Karola
    and Fritsch, Jannik and Rohlfing, Katharina and Wrede, Britta}, year={2009}, pages={1–6}
    }'
  chicago: Vollmer, Anna-Lisa, Katrin Solveig Lohan, Kerstin Fischer, Yukie Nagai,
    Karola Pitsch, Jannik Fritsch, Katharina Rohlfing, and Britta Wrede. “People Modify
    Their Tutoring Behavior in Robot-Directed Interaction for Action Learning.” In
    <i>Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
    on Development and Learning</i>, 1–6. IEEE, 2009. <a href="https://doi.org/10.1109/DEVLRN.2009.5175516">https://doi.org/10.1109/DEVLRN.2009.5175516</a>.
  ieee: 'A.-L. Vollmer <i>et al.</i>, “People modify their tutoring behavior in robot-directed
    interaction for action learning,” in <i>Development and Learning, 2009. ICDL 2009.
    IEEE 8th International Conference on Development and Learning</i>, 2009, pp. 1–6,
    doi: <a href="https://doi.org/10.1109/DEVLRN.2009.5175516">10.1109/DEVLRN.2009.5175516</a>.'
  mla: Vollmer, Anna-Lisa, et al. “People Modify Their Tutoring Behavior in Robot-Directed
    Interaction for Action Learning.” <i>Development and Learning, 2009. ICDL 2009.
    IEEE 8th International Conference on Development and Learning</i>, IEEE, 2009,
    pp. 1–6, doi:<a href="https://doi.org/10.1109/DEVLRN.2009.5175516">10.1109/DEVLRN.2009.5175516</a>.
  short: 'A.-L. Vollmer, K.S. Lohan, K. Fischer, Y. Nagai, K. Pitsch, J. Fritsch,
    K. Rohlfing, B. Wrede, in: Development and Learning, 2009. ICDL 2009. IEEE 8th
    International Conference on Development and Learning, IEEE, 2009, pp. 1–6.'
date_created: 2020-06-24T13:02:43Z
date_updated: 2023-02-01T13:06:43Z
department:
- _id: '749'
doi: 10.1109/DEVLRN.2009.5175516
keyword:
- robot simulation
- hand movement velocity
- robotic interaction partner
- robotic agent
- robot-directed interaction
- multimodal analysis
- Motionese
- Motherese
- intelligent tutoring systems
- immature cognitive capability
- human computer interaction
- eye gaze
- child-directed speech
- child-directed motion
- bottom-up system
- bottom-up saliency-based attention model
- adult-robot interaction
- adult-child interaction
- adult-adult interaction
- human-robot interaction
- action learning
- social learning scenario
- social robotics
- software agents
- top-down feedback structures
- tutoring behavior
language:
- iso: eng
page: 1-6
publication: Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference
  on Development and Learning
publisher: IEEE
status: public
title: People modify their tutoring behavior in robot-directed interaction for action
  learning
type: conference
user_id: '14931'
year: '2009'
...
