Introduction
The peer reviewed article being considered in this paper is 'The impact of food prices on consumption: a systematic review of research on the price elasticity of demand for food'. The second research peer reviewed article is 'Assessing the potential effectiveness of food and beverage taxes and subsidies for improving public health: a systematic review of prices demand and body weight outcomes.'
The purpose of the research being conducted in the first article is to establish the effects of prices on the demand of various foods. The research considered 160 studies which had been conducted on the price elasticity of demand for the major food categories to determine the average elasticity by food category (Tatiana et al, 2010).
The second peer reviewed article is assessing the impact of taxes and subsidies on the body weight outcomes. The prices of fast-foods and fruits and vegetables are affected by taxes and subsidies and as such they impact the body weight outcomes of the population (Powell et al, 2012).
The research question in the first article is 'how does price changes in food and non-alcoholic beverages affect the demand for these foods?'
the null hypothesis tested is
H0 – price changes in foods and non-alcoholic drinks does not affect the demand of these foods.
Against the alternative hypothesis
Ha – Price changes in foods and non-alcoholic drinks does not affect the demand for these foods.
The dependent variable is the demand for foods and non-alcoholic beverages and the independent variable is the price change.
For the second peer reviewed article, the research question is 'how does alteration in the taxes and subsidies on fast foods and fruits and vegetables affect the body weight outcomes of the population?'
The null hypothesis being tested is
H0 – Alteration of the taxes and subsidies on fast foods and fruits and vegetables does not affect the body weight outcome of the population.
Against the alternative hypothesis
Ha – Alteration of the taxes and subsidies on fast foods does affect the body weight outcome of the population.
The dependent variable is the body weight outcome and the independent variable is taxes ad subsidies.
References:
Powell, L.M., Chriqui, J. F., Khan, T., Wada, R., & Chaloupka, F. J. (2012). Assessing the potential effectiveness of food and beverage taxes and subsidies for improving public health:a systematic review of prices, demand and body weight outcomes. U S National Library of Medicine National Institute of Health. 14(2): 110-128. Retrieved from: http://www.ncbi.nlm.nih.gov/pubmed/23174017
Tatiana, A., Long, M.W., & Brownell, K. D. (2010). The Impact of Food Prices on Consumption: A Systematic Review of Research on the Price Elasticity of Demand for Food. American Journal of Public Health. 100 (2):216-222. Retrieved from: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2804646/
