Abstract
The aim of the current study was to assess the components of the intervention program “Aquatic”, targeted at the reduction of bottled water use in adolescence. The Comprehensive Action Determination Model was chosen as a theory of change for the development and evaluation of pro-environmental behavior intervention. We examined the impact of five experimental intervention factors (water bottles, promo video, prompts, goal setting, and feedback) on eight intervention program outcomes: Perceived behavioral control, Social norm, Habit, Awareness of need, Awareness of consequence, Personal norm, Intention, and Behavior. The study sample consisted of 419 adolescents (52.8% girls, Mage = 15.21, SDage = 0.64) from Lithuania. A factorial experimental study design was used, and a Latent change modeling approach was applied for the evaluation of individual and combined effects of intervention components. Promo video, Prompts, and Goal setting had a positive effect on Awareness of consequence, Social norm, and Awareness of need, respectively. Receiving a Water bottle in combination with Promo video had a positive effect on Perceived behavioral control and in combination with Prompts as well as Goals—on Awareness of need. Water bottles, Promo-video, Prompts, and Goals, but not Feedback, had value in the promotion of targeted pro-environmental outcomes.
Highlights
Modern lifestyles and especially ever-increasing consumption leave growing piles of trash that cause dramatic consequences to the planet and, to the well-being of people [1]
The current study reports on the possibilities for reduction of bottled water use among adolescents by delivering the intervention program “Aquatic” that was developed based on the theory of change grounded in the Comprehensive Action Determination Model (CADM) [6]
We tested the effect of five intervention components, namely, Making it easy, Promo video, Prompts, Goal setting, and Feedback on eight outcome measures, that is, Perceived behavioral control, Social norm, Habit, Awareness of need, Awareness of consequences, Personal norm, Intention, and Behavior
Summary
Modern lifestyles and especially ever-increasing consumption leave growing piles of trash that cause dramatic consequences to the planet and, to the well-being of people [1]. In 2016 only, humanity produced 242 million tons of plastic waste [3]. Every year 150,000 to 500,000 tons of plastic waste from the EU end up in the oceans [4]. It does literally threaten the lives of sea animals, and, through a consumption cycle, comes back to people and may end up in their bodies, potentially causing severe health issues [4]. It becomes increasingly obvious that focusing only on recycling is not the solution and the World should move towards drastic reduction of single use plastic such as water bottles [5]. The current study reports on the possibilities for reduction of bottled water use among adolescents by delivering the intervention program “Aquatic” that was developed based on the theory of change grounded in the Comprehensive Action Determination Model (CADM) [6]
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