title: Estimating cannibalization rates for pioneering innovations

authors: van Heerde, Harald J.

subjects: new product

abstract: To evaluate the success of a new product, managers need to determine how much of its new demand is due to cannibalizing the firm’s other products, rather than drawing from competition or generating primary demand. We introduce a time-varying vector error-correction model to decompose the base sales of a new product into its constituent sources. The model allows managers to estimate cannibalization effects and calculate the new product’s net demand, which may be considerably less than its total demand. We apply our methodology to the introduction of the Lexus RX300 using detailed car transaction data. This case is especially interesting because the Lexus RX300 was the first crossover sport utility vehicle (SUV), implying that its demand could come from both the luxury SUV and the luxury sedan categories. Because Lexus was active in both categories, there was a double cannibalization potential. We show how the contribution of the different demand sources varies over time and discuss the managerial implications for both the focal brand and its competitors.

text: Estimating cannibalization rates for pioneering innovations To evaluate the success of a new product, managers need to determine how much of its new demand is due to cannibalizing the firm’s other products, rather than drawing from competition or generating primary demand. We introduce a time-varying vector error-correction model to decompose the base sales of a new product into its constituent sources. The model allows managers to estimate cannibalization effects and calculate the new product’s net demand, which may be considerably less than its total demand. We apply our methodology to the introduction of the Lexus RX300 using detailed car transaction data. This case is especially interesting because the Lexus RX300 was the first crossover sport utility vehicle (SUV), implying that its demand could come from both the luxury SUV and the luxury sedan categories. Because Lexus was active in both categories, there was a double cannibalization potential. We show how the contribution of the different demand sources varies over time and discuss the managerial implications for both the focal brand and its competitors.

year: 2010

title: Communication Networks of Men with Prostate Cancer

authors: Brown, Dorothy Ruth

subjects: Communication networks

abstract: Prostate cancer can be a difficult disease to manage but men who are diagnosed with it have networks of others around them who can be ready to offer support through the treatment. The effectiveness with which these networks can be mobilised is partly determined by the willingness of men to disclose their diagnosis. The main purpose of this research was to determine both the structure and content of the networks of men who have recently had a biopsy for prostate cancer.

This qualitative study was conducted from an egocentric network perspective in which nodes and ties are fundamental features; nodes being the individuals or groups within a network and ties the relationships between them. All men who were on the waiting list for a prostate biopsy were eligible to be included in this study. A total of 41 men participated and completed a semi-structured interview that sought to elicit who were in the men’s networks and what was talked about. Particular emphasis was placed on the types of relationships together with the context in which they existed. Only 22 interviews from participants who received a positive biopsy were used for the analysis. A thematic analysis of the transcriptions enabled assessments to be made of which individuals and organisations were important and their relationships to the ego at this point in the medical process. 
The findings revealed that network structure is comprised of both general and health communication networks. General networks were those in everyday life and were determined by relationship status, employment status and geographical proximity of the men’s immediate family. Health communication networks were based around health issues and the factors which influenced these were men’s previous medical experience or whether they had medical professionals in their immediate family. 

Network content is the communication which occurs between individuals and the major theme concerns disclosure. The men’s decision about whether to disclose their prostate issues to others in their networks was based on the perceived presence of four factors in others: homophily, close proximity, strong ties and the professional or personal medical experience of others. Discerning if one or more of these factors were present in others, the men were increasingly likely to disclose about their own health. The second theme examined the tensions which existed between the benefits and barriers to disclosure. This depended on individuals and the context and were managed by the men when assessing each situation on a case-by-case basis.

Theoretical implications of this research concern the recognition and functionality of health communication networks together with the four factors of disclosure. Future research would be focused around a longitudinal study to assess the dynamic nature of egocentric networks in responding to chronic illness. In addition, networks of single men and the value of siblings could be identified. Emphasis on the practical implications involve identifying and promoting favourable opportunities for disclosure to benefit the men who can receive support from their networks.

text: Communication Networks of Men with Prostate Cancer Prostate cancer can be a difficult disease to manage but men who are diagnosed with it have networks of others around them who can be ready to offer support through the treatment. The effectiveness with which these networks can be mobilised is partly determined by the willingness of men to disclose their diagnosis. The main purpose of this research was to determine both the structure and content of the networks of men who have recently had a biopsy for prostate cancer.

This qualitative study was conducted from an egocentric network perspective in which nodes and ties are fundamental features; nodes being the individuals or groups within a network and ties the relationships between them. All men who were on the waiting list for a prostate biopsy were eligible to be included in this study. A total of 41 men participated and completed a semi-structured interview that sought to elicit who were in the men’s networks and what was talked about. Particular emphasis was placed on the types of relationships together with the context in which they existed. Only 22 interviews from participants who received a positive biopsy were used for the analysis. A thematic analysis of the transcriptions enabled assessments to be made of which individuals and organisations were important and their relationships to the ego at this point in the medical process. 
The findings revealed that network structure is comprised of both general and health communication networks. General networks were those in everyday life and were determined by relationship status, employment status and geographical proximity of the men’s immediate family. Health communication networks were based around health issues and the factors which influenced these were men’s previous medical experience or whether they had medical professionals in their immediate family. 

Network content is the communication which occurs between individuals and the major theme concerns disclosure. The men’s decision about whether to disclose their prostate issues to others in their networks was based on the perceived presence of four factors in others: homophily, close proximity, strong ties and the professional or personal medical experience of others. Discerning if one or more of these factors were present in others, the men were increasingly likely to disclose about their own health. The second theme examined the tensions which existed between the benefits and barriers to disclosure. This depended on individuals and the context and were managed by the men when assessing each situation on a case-by-case basis.

Theoretical implications of this research concern the recognition and functionality of health communication networks together with the four factors of disclosure. Future research would be focused around a longitudinal study to assess the dynamic nature of egocentric networks in responding to chronic illness. In addition, networks of single men and the value of siblings could be identified. Emphasis on the practical implications involve identifying and promoting favourable opportunities for disclosure to benefit the men who can receive support from their networks.

year: 2013

title: Lost in translation: western representations of Māori knowledge

authors: Mika, Carl Te Hira

abstract: We recently attended a conference at which a non-Māori presenter, drawing on a particular metaphor already established by Māori writers, related Māori natural world features to a research method. The presentation was useful because it highlighted several issues that call for our concern as Māori philosophers. In this article, we outline these concerns, which are: first, that a blunt response to such a presentation is not undertaken lightly from a Māori viewpoint; and, second, that the presenter’s talk exemplifies a wider problem of warping Māori concepts and labels to fit a Western philosophical approach. We call this latter problem ‘Translation’, because it involves moving the Māori world and its phenomena over into one that is palatable for policy and research. The aim of the article is not to single out the presenter, but rather to refer to his presentation in order to consider the prior issue of Translation. In cases where Translation occurs, a Māori critical philosophical stance is clearly needed, in order to both investigate the warping of Māori thought on which it relies, and review the place of Māori philosophy and philosophical response in the arena of educational research.

text: Lost in translation: western representations of Māori knowledge We recently attended a conference at which a non-Māori presenter, drawing on a particular metaphor already established by Māori writers, related Māori natural world features to a research method. The presentation was useful because it highlighted several issues that call for our concern as Māori philosophers. In this article, we outline these concerns, which are: first, that a blunt response to such a presentation is not undertaken lightly from a Māori viewpoint; and, second, that the presenter’s talk exemplifies a wider problem of warping Māori concepts and labels to fit a Western philosophical approach. We call this latter problem ‘Translation’, because it involves moving the Māori world and its phenomena over into one that is palatable for policy and research. The aim of the article is not to single out the presenter, but rather to refer to his presentation in order to consider the prior issue of Translation. In cases where Translation occurs, a Māori critical philosophical stance is clearly needed, in order to both investigate the warping of Māori thought on which it relies, and review the place of Māori philosophy and philosophical response in the arena of educational research.

year: 2017