6 research outputs found
Assessing adult literacy: the aim, use and benefits of standardized screening tools
Large-scale surveys, such as the International Adult Literacy Survey (IALS) (OECD &
Canada, 2000), provide interesting data on literacy and numeracy skills on a crosscountry
level. They attempt to answer policy-related questions like: how many adults
have low first language literacy or are at risk of becoming low-literate and what are their
characteristics? In these studies groups of adults are commonly described as having
either high or low literacy skills. But since reading or writing ability itself is a
continuum, the question arises: what is the cut-off point? In other words: where does
the “problem” of low literacy begin and when is educational or some other kind of
intervention in a specific context necessary or desirable?
When answering these questions and promoting adult literacy development, most
educational sectors will make use of micro-level analysis to complement the macro-level
data. In that case, tools that describe the learning needs and interests of individuals are
necessary. The research we report on in this article examines the (practical)
possibilities, difficulties and policy measures which underlie the use of such
standardized literacy screening devices or basic skills audits among adults having Dutch
as their mother tongue. Built upon a qualitative analysis of existing screening
instruments in Belgium (Flemish Community) and the Netherlands this study explores
how screening procedures are adopted today in different sectors and in which way
these procedures are able to identify the particularities of individual adults’ literacy
skills. By conducting in-depth interviews with experts (policy makers, academic experts,
educational practitioners, low-literates) on the topic of (low) literacy, the advantages
and disadvantages of the implementation of a single and uniform standardized
screening tool for different educational sectors were explored.
The results of this study (D’hertefelt et al., 2007) show that not all social domains
are equally open to educational assessment using a standardized literacy test in an
objective and accurate way. Moreover, the results show that literacy screening may lead
to several negative effects. It is argued that in some contexts, those negative effects
might overshadow the positive ones. Furthermore, none of the existing tools in
Belgium and the Netherlands is able to screen all aspects of literacy in one short and
practical way. From this we conclude that although there is a powerful internal logic in
the use of one single screening instrument for assessment, the practical benefits of such
a device can be questioned and so can the ethical ones. The use of several instruments
aligned with the needs of specific target groups is therefore strongly recommended.
The context of the screening procedure and the literacy context (such as health care
and workplace) should be incorporated in the instrument.
Other results will be presented in this paper, such as the importance of oral
feedback on the candidate results, the training of the assessors, the integration of the
screening in normal educational procedures and the link between the assessment and
the methods of training
De NT2-docent: man/vrouw met missie? Lesgevers aan het woord over vernieuwingen in het NT2-onderwijs
Factors Influencing the Conductivity of Aqueous Sol(ution)–Gel-Processed Al-Doped ZnO Films
Solution
processing of Al-doped ZnO (AZO) is interesting from an
economical point of view for reducing synthesis and deposition costs
in comparison to that for vacuum methods. Several (aqueous) chemical
solution deposition routes have been explored for AZO, but the question
that has never been answered is how state-of-the-art conductivity
is achieved. Here, we fine tune an aqueous solution precursor for
AZO, resulting in resistivities within the 10<sup>–3</sup> Ohm
cm range after a reductive treatment. Profound insights are gained
through the study of the density of the film, the crystal phase, the
optimum Al doping, and the effect of Al positioning in the ZnO lattice,
as determined by <sup>27</sup>Al magic-angle-spinning nuclear magnetic
resonance (MAS NMR) spectroscopy in combination with <sup>1</sup>H
NMR, in order to understand the conductivity mechanism. As the conductivity
of the AZO films drops as a function of time, the position of Al is
studied with respect to the observance of charge carriers using Fourier
transform infrared spectroscopy. The influences of all of these different
factors on conductivity are summarized in a general overview