Melda Lois Griffiths

Research group:
Cognitive Science
029 208 74007
Tower Building, Park Place

Research summary

My research will be exploring the effects of healthy vending in Welsh hospitals, with the aim of improving its economic sustainability and public health benefits.

In Welsh hospitals, only healthy products can be sold in vending machines, and health promoting labels are displayed on all machines. Preliminary audits suggested that the operationalization of this directive has resulted in large losses and drops in sales volumes. 

I will be conducting further investigations into the effect of healthy vending on sales, and exploring whether a decrease in sales volume equates to healthier behaviour, or if consumers are purchasing less healthy snacks from other vendors.

Knowledge from decision making psychology will be applied to develop interventions which make vending machines more profitable and healthier i.e. pricing structures, promotional messages.

Full list of publications



School of Psychology


Research group

Cognitive Science

Research collaborators

Dr Lewis Bott

Postgraduate education

MSc in Social Science Research Methods, Cardiff University 2016-2017