Tid: Torsdag 9 juni 2016, kl. 15:00-17:00
Plats: C389, Södra huset, Frescati

Abstract
The LENA Pro system is designed for clinical practitioners and researchers interested in child language acquisition and natural language environments (LENA Foundation, 2014). The system is designed to collect up to 16 hours of audio signal and to identify and segment human speakers and other audio sounds from the recordings. Additionally to speaker identification, the system estimates counts for adult words, child vocalizations and conversational turns with an algorithm based on US-English data (see further Xu et. al, 2008; Xu et al., 2009). As the system is partially language and culturally dependent, its suitability to non-English language samples need to be studied.

If found suitable, the system could provide clinicians a feedback tool and a way of measuring the effects of ecological interventions, such as PCIT (parent-child interaction therapy, see e.g. Falkus et al., 2015).

For researchers, LENA provides a possibility to collect large data sets from natural environments effortlessly and to apply data the system’s data mining tool to extract information about the collected data.

In this talk, I will discuss previous studies on LENA reliability and validity and present preliminary observations of feasibility of the LENA System for Finnish.

References
Falkus, G., Tilley, C., Thomas, C., Hockey, H., Kennedy, A., Arnold, T., Thorburn, B., Jones, K., Bhavika, P., Pimenta, C., Shah, R., Tweedie, F., O’Brien, F., Earney, R. & Pring, T. (2015). Assessing the effectiveness of parent-child interaction therapy with language delayed children: A clinical investigation. /Child Language Teaching and Therapy,/ 1–11.

LENA Foundation (2014). LENA Pro. [Introductional information about LENA Pro software] Retrieved 9^th of January2015 form http://www.lenafoundation.org/lena-pro/.

Xu, D. & Yapanel, U., Gray, S. & Baer, C.T. (2008). /The LENA™ Language Environment Analysis System: The Interpreted Time Segments (ITS) File/.
LENA Technical Report LTR-04-02. LENA Foundation, Boulder: Colorado.

Xu, D. & Yapanel, U. & Gray, S. (2009). /Reliability of the LENA™ Language Environment Analysis System in Young Children’s Natural Home Environments/. LENA Technical Report LTR-05-02. LENA Foundation, Boulder: Colorado.

Hjärtligt välkomna!

Iris-Corinna Schwarz och Hatice Zora