title: Investigating probability concepts of secondary pre-service teachers in a game context

authors: Dayal, Hem Chand

abstract: There is a rich literature on students' and teachers' intuitions and misconceptions about probability. However, less attention has been paid to the development of pre-service teachers' probabilistic thinking in teacher education. Based on this, the second author developed a lesson sequence for teaching probability. In particular, it demonstrates how a game context can be used to explore the relationship between experimental and theoretical probabilities in a collaborative learning setting. The lesson sequence integrates concepts and processes related to probability and is grounded in socio-cultural theory. We trialed the sequence with secondary pre-service teachers. This paper focuses on their understanding of the probability concepts embedded in the sequence. Video and audio data indicates that while teachers used a range of strategies and data displays to explain the ideas integrated in the lessons, some reverted to equiprobability bias. The findings also reveal that pre-service teachers can modify their thinking when engaged in rich teaching and learning tasks.

text: Investigating probability concepts of secondary pre-service teachers in a game context There is a rich literature on students' and teachers' intuitions and misconceptions about probability. However, less attention has been paid to the development of pre-service teachers' probabilistic thinking in teacher education. Based on this, the second author developed a lesson sequence for teaching probability. In particular, it demonstrates how a game context can be used to explore the relationship between experimental and theoretical probabilities in a collaborative learning setting. The lesson sequence integrates concepts and processes related to probability and is grounded in socio-cultural theory. We trialed the sequence with secondary pre-service teachers. This paper focuses on their understanding of the probability concepts embedded in the sequence. Video and audio data indicates that while teachers used a range of strategies and data displays to explain the ideas integrated in the lessons, some reverted to equiprobability bias. The findings also reveal that pre-service teachers can modify their thinking when engaged in rich teaching and learning tasks.

year: 2020

title: Product effects on endorser image: the potential for reverse image transfer

authors: Charbonneau, Jan

subjects: product image

abstract: Purpose – The purpose of this paper is to investigate reverse image transfer as it applies to both celebrities (actors/models) and celebrity athletes in a New Zealand context. It extends the work of Garland and Charbonneau which examined reverse image transfer (product image transferring to endorser) as it applied to celebrity athlete endorsers alone.
Design/methodology/approach – The data for the study are collected from 240 New Zealand university undergraduate students who are split equally into eight treatment groups. Using Ohanian’s source-credibility scale, each group rate several celebrities or celebrity athletes on their suitability for endorsing two contrasting products: orange juice (representing a positively perceived product) and cigarettes (representing a negatively perceived product). ANOVA (analysis of variance) is used to compare means between celebrities/celebrity athletes and the products they endorse. The study is a close replication of Till’s work in the USA.
Findings – The results show a pronounced polarising effect for celebrity athletes, as opposed to celebrities (actors/models), for the endorsement of both products but particularly for cigarettes, the negative product. The potential for reverse image transfer is real, demanding careful attention by celebrities, agents and marketers during evaluation of endorsement opportunities. Research limitations/implications – Though not compromising the research integrity, the sample of New Zealand students is restrictive. Further extension of the research is advisable to address limitations based on sample composition, cultural setting and time of research.
Originality/value – Aside from addressing the paucity of research on reverse image transfer, this paper signals important managerial implications for celebrity endorsers and their agents.

text: Product effects on endorser image: the potential for reverse image transfer Purpose – The purpose of this paper is to investigate reverse image transfer as it applies to both celebrities (actors/models) and celebrity athletes in a New Zealand context. It extends the work of Garland and Charbonneau which examined reverse image transfer (product image transferring to endorser) as it applied to celebrity athlete endorsers alone.
Design/methodology/approach – The data for the study are collected from 240 New Zealand university undergraduate students who are split equally into eight treatment groups. Using Ohanian’s source-credibility scale, each group rate several celebrities or celebrity athletes on their suitability for endorsing two contrasting products: orange juice (representing a positively perceived product) and cigarettes (representing a negatively perceived product). ANOVA (analysis of variance) is used to compare means between celebrities/celebrity athletes and the products they endorse. The study is a close replication of Till’s work in the USA.
Findings – The results show a pronounced polarising effect for celebrity athletes, as opposed to celebrities (actors/models), for the endorsement of both products but particularly for cigarettes, the negative product. The potential for reverse image transfer is real, demanding careful attention by celebrities, agents and marketers during evaluation of endorsement opportunities. Research limitations/implications – Though not compromising the research integrity, the sample of New Zealand students is restrictive. Further extension of the research is advisable to address limitations based on sample composition, cultural setting and time of research.
Originality/value – Aside from addressing the paucity of research on reverse image transfer, this paper signals important managerial implications for celebrity endorsers and their agents.

year: 2010

title: An ashy septingentenarian: the Kaharoa tephra turns 700 (with notes on its volcanological, archaeological, and historical importance)

authors: Lowe, David J.

abstract: Most of us are aware of the basaltic Tarawera eruption on 10th June 1886: the high toll on life (~120 people), landscape devastation, and loss of the Pink and White Terraces. But this was not the first time that Mt Tarawera produced an eruption of importance both to volcanology and human history. This edition of the GSNZ Newsletter marks the 700th anniversary of the Kaharoa eruption – its septingentenary to be precise – which occurred at Mt Tarawera in the winter of 1314 AD (± 12 years) (Hogg et al. 2003) (Fig. 1). The importance of the Kaharoa eruption is at least threefold. (1) It is the most recent rhyolite eruption in New Zealand, and the largest New Zealand eruption volumetrically of the last millennium. (2) The Kaharoa tephra is an important marker horizon in late Holocene stratigraphy and geoarchaeology (Lowe et al. 1998, 2000), and in particular helps to constrain the timing of settlement of early Polynesians in North Island (Newnham et al. 1998; Hogg et al. 2003; Lowe 2011). (3) There is a link between the soils that developed on the Kaharoa tephra, the animal ‘wasting’ disease known as ‘bush sickness’, and the birth of a government soil survey group as an independent organisation (Tonkin 2012).

text: An ashy septingentenarian: the Kaharoa tephra turns 700 (with notes on its volcanological, archaeological, and historical importance) Most of us are aware of the basaltic Tarawera eruption on 10th June 1886: the high toll on life (~120 people), landscape devastation, and loss of the Pink and White Terraces. But this was not the first time that Mt Tarawera produced an eruption of importance both to volcanology and human history. This edition of the GSNZ Newsletter marks the 700th anniversary of the Kaharoa eruption – its septingentenary to be precise – which occurred at Mt Tarawera in the winter of 1314 AD (± 12 years) (Hogg et al. 2003) (Fig. 1). The importance of the Kaharoa eruption is at least threefold. (1) It is the most recent rhyolite eruption in New Zealand, and the largest New Zealand eruption volumetrically of the last millennium. (2) The Kaharoa tephra is an important marker horizon in late Holocene stratigraphy and geoarchaeology (Lowe et al. 1998, 2000), and in particular helps to constrain the timing of settlement of early Polynesians in North Island (Newnham et al. 1998; Hogg et al. 2003; Lowe 2011). (3) There is a link between the soils that developed on the Kaharoa tephra, the animal ‘wasting’ disease known as ‘bush sickness’, and the birth of a government soil survey group as an independent organisation (Tonkin 2012).

year: 2014