Persuasive technology

Persuasive technologies can be categorized by their functional roles. B. J. Fogg proposes the functional triad as a classification of three "basic ways that people view or respond to computing technologies": persuasive technologies can function as tools, media, or social actors – or as more than one at once.{{sfn|Fogg|1998}}

• As tools, technologies can increase people's ability to perform a target behavior by making it easier or restructuring it.{{sfn|Fogg|2003b}} For example, an installation wizard can influence task completion – including completing tasks not planned by users (such as installation of additional software).
• As media, interactive technologies can use both interactivity and narrative to create persuasive experiences that support rehearsing a behavior, empathizing, or exploring causal relationships.{{sfn|Fogg|2003c}} For example, simulations and games instantiate rules and procedures that express a point of view and can shape behavior and persuade; these use procedural rhetoric.{{sfn|Bogost|2007|p={{page needed|date=August 2021}}}}
• Technologies can also function as social actors.{{sfn|Reeves|Nass|1996|p={{page needed|date=August 2021}}}}{{sfn|Turkle|1984|p={{page needed|date=August 2021}}}} This "opens the door for computers to apply ... social influence".{{sfn|Fogg|2003d}} Interactive technologies can cue social responses, e.g., through their use of language, assumption of established social roles, or physical presence. For example, computers can use embodied conversational agents as part of their interface. Or a helpful or disclosive computer can cause users to mindlessly reciprocate.{{sfn|Fogg|Nass|1997b}}{{sfn|Moon|2000}} Fogg notes that "users seem to respond to computers as social actors when computer technologies adopt animate characteristics (physical features, emotions, voice communication), play animate roles (coach, pet, assistant, opponent), or follow social rules or dynamics (greetings, apologies, turn taking)."{{sfn|Fogg|1998}}

Persuasive technologies can also be categorized by whether they change attitude and behaviors through direct interaction or through a mediating role:{{sfn|Oinas-Kukkonen|Harjumaa|2008}} do they persuade, for example, through human-computer interaction (HCI) or computer-mediated communication (CMC)? The examples already mentioned are the former, but there are many of the latter. Communication technologies can persuade or amplify the persuasion of others by transforming the social interaction,{{sfn|Licklider|Taylor|1968}}{{sfn|Bailenson|Beall|Loomis|Blascovich|2004}} providing shared feedback on interaction,{{sfn|Dimicco|Pandolfo|Bender|2004}} or restructuring communication processes.{{sfn|Winograd|1986}}

Persuasion design is the design of messages by analyzing and evaluating their content, using established psychological research theories and methods. Andrew Chak{{sfn|Perfetti|2003}} argues that the most persuasive web sites focus on making users feel comfortable about making decisions and helping them act on those decisions. During the clinical encounter, clinical decision support tools (CDST) are widely applied to improve patients' satisfaction towards medical decision-making shared with the physicians.{{sfn|Yang|Shah|Burnside|Little|2020}} The comfort that a user feels is generally registered subconsciously. {{sfn|Spahn|2012}}

Previous research has also utilized on social motivators like competition for persuasion. By connecting a user with other users,{{sfn|De Oliveira|Cherubini|Oliver|2010}} his/her coworkers,{{sfn|Thieme|Comber|Miebach|Weeden|2012}} friends and families,{{sfn|Caraban|Ferreira|Gouveia|Karapanos|2015}} a persuasive application can apply social motivators on the user to promote behavior changes. Social media such as Facebook, Twitter also facilitate the development of such systems. It has been demonstrated that social impact can result in greater behavior changes than the case where the user is isolated.{{sfn|Chiu|Chang|Chang|Chu|2009}}

Halko and Kientz made an extensive search in the literature for persuasive strategies and methods used in the field of psychology to modify health-related behaviors.{{sfn|Halko|Kientz|2010}} Their search concluded that there are eight main types of persuasive strategies, which can be grouped into the following four categories, where each category has two complementary approaches.

This persuades the technology user through an authoritative agent, for example, a strict personal trainer who instructs the user to perform the task that will meet their goal.{{citation needed|date=August 2021}}

This persuades the user through a neutral agent, for example, a friend who encourages the user to meet their goals. Another example of instruction style is customer reviews; a mix of positive and negative reviews together give a neutral perspective on a product or service.{{sfn|Wixom|Todd|2005}}

This persuades the user through the notion of cooperating and teamwork, such as allowing the user to team up with friends to complete their goals.{{citation needed|date=August 2021}}

This persuades the user through the notion of competing. For example, users can play against friends or peers and be motivated to achieve their goal by winning the competition.{{citation needed|date=August 2021}}

This persuades the user through external motivators, for example, winning a trophy as a reward for completing a task.{{citation needed|date=August 2021}}

This persuades the user through internal motivators, such as the good feeling a user would have for being healthy or for achieving a goal.{{citation needed|date=August 2021}}

It is worth noting that intrinsic motivators can be subject to the overjustification {{Cite web|url=https://dictionary.apa.org/overjustification-effect|title=APA Dictionary of Psychology}} effect, which states if intrinsic motivators are associated with a reward and you remove the reward then the intrinsic motivation tends to diminish. This is because depending on how the reward is seen, it can become linked to extrinsic motivations instead of intrinsic motivations. Badges, prizes, and other award systems will increase intrinsic motivation if they are seen as reflecting competence and merit.

In 1973, Lepper et al. conducted a foundational study that underscored the overjustification effect.Greene, David, and Mark R. Lepper. “Effects of Extrinsic Rewards on Children’s Subsequent Intrinsic Interest.” Child Development, vol. 45, no. 4, [Wiley, Society for Research in Child Development], 1974, pp. 1141–45, https://doi.org/10.2307/1128110. Their team brought magic markers to a preschool and created three test groups of children who were intrinsically motivated. The first group were informed that if they used markers they could receive a “Good Player Award.” The second group was not incentivized to use the magic markers with a reward, but were given a reward after playing. The third group was given no expectations about awards and received no awards. A week later, all students played with the markers without a reward. The students receiving the "good player" award originally showed half as much interest as when they began the study. Later, other psychologists repeated this experiment only to conclude that rewards create short-term motivation, but undermine intrinsic motivation.

This persuades the user by removing an unpleasant stimulus. For example, a brown and dying nature scene might turn green and healthy as the user practises more healthy behaviors.{{citation needed|date=August 2021}}

This persuades the user by adding a positive stimulus. For example, adding flowers, butterflies, and other nice-looking elements to an empty nature scene as a user practises more healthy behaviors.{{citation needed|date=August 2021}}

More recently, Lieto and Vernero{{sfn|Lieto|Vernero|2013}}{{sfn|Lieto|Vernero|2014}} have also shown that arguments reducible to logical fallacies are a class of widely adopted persuasive techniques in both web and mobile technologies. These techniques have also shown their efficacy in large-scale studies about persuasive news recommendations{{sfn|Gena|Grillo|Lieto|Mattutino|2019}} as well as in the field of human-robot interaction.{{sfn|Augello|Città|Gentile|Lieto|2021}} A 2021 report by the RAND Corporation {{sfn|Matthews|Demus|Treyger|Posard|2021}} shows how the use of logical fallacies is one of the rhetorical strategies used by the Russia and its agents to influence the online discourse and spread subversive information in Europe.

One feature that distinguishes persuasion technology from familiar forms of persuasion is that the individual being persuaded often cannot respond in kind. This is a lack of reciprocal equality. For example, when a conversational agent persuades a user using social influence strategies, the user cannot also use similar strategies on the agent.{{sfn|Fogg|2003a|p={{page needed|date=August 2021}}}}

While persuasive technologies are found in many domains, considerable recent attention has focused on behavior change in health domains. Digital health coaching is the utilization of computers as persuasive technology to augment the personal care delivered to patients, and is used in numerous medical settings.{{sfn|Elton|2007}}

Numerous scientific studies show that online health behaviour change interventions can influence users' behaviours. Moreover, the most effective interventions are modelled on health coaching, where users are asked to set goals, educated about the consequences of their behaviour, then encouraged to track their progress toward their goals. Sophisticated systems even adapt to users who relapse by helping them get back on the bandwagon.{{sfn|Cugelman|Thelwall|Dawes|2011}}

Maintaining behavior change long term is one of the challenges of behavior change interventions. For instance, as reported, for chronic illness treatment regimens non-adherence rate can be as high as 50% to 80%. Common strategies that have been shown by previous research to increase long-term adherence to treatment include extended care, skills training, social support, treatment tailoring, self-monitoring, and multicomponent stages. However, even though these strategies have been demonstrated to be effective, there are also existing barriers to implementation of such programs: limited time, resources, as well as patient factors such as embarrassment of disclosing their health habits.{{sfn|Middleton|Anton|Perri|2013}}

To make behavior change strategies more effective, researchers also have been adapting well-known and empirically tested behavior change theories into such practice. The most prominent behavior change theories that have been implemented in various health-related behavior change research has been self-determination theory, theory of planned behavior, social cognitive theory, transtheoretical model, and social ecological model. Each behavior change theory analyses behavior change in different ways and consider different factors to be more or less important. Research has suggested that interventions based on behavior change theories tend to yield better result than interventions that do not employ such theories. The effectiveness of them vary: social cognitive theory proposed by Bandura, which incorporates the well-known construct of self-efficacy, has been the most widely used method in behavior change interventions as well as the most effective in maintaining long-term behavior change.{{sfn|Joseph|Daniel|Thind|Benitez|2016}}

Even though the healthcare discipline has produced a plethora of empirical behavior change research, other scientific disciplines are also adapting such theories to induce behavior change. For instance, behavior change theories have also been used in sustainability, such as saving electricity,{{sfn|Wemyss|Cellina|Lobsiger-Kägi|de Luca|2019}} and lifestyle, such as helping people drinking more water.{{sfn|Dhar|Putnam-Farr|2017}} These research has shown that these theories, already effectively proven useful in healthcare, is equally powerful in other fields to promote behavior change.{{citation needed|date=August 2021}}

Interestingly, there have been some studies that showed unique insights and that behavior change is a complex chain of events: a study by Chudzynski et al. showed that reinforcement schedule has little effect on maintaining behavior change.{{sfn|Chudzynski|Roll|McPherson|Cameron|2015}} A point made in a study by Wemyss et al. is that even though people who have maintained behavior change for short term might revert to baseline, their perception of their behavior change could be different: they still believe they maintained the behavior change even if they factually have not.{{sfn|Wemyss|Cellina|Lobsiger-Kägi|de Luca|2019}} Therefore, it is possible self-report measures would not always be the most effective way of evaluating the effectiveness of the intervention.{{citation needed|date=August 2021}}

Previous work has also shown that people are receptive to change their behaviors for sustainable lifestyles. This result has encouraged researchers to develop persuasive technologies to promote for example, green travels,{{sfn|Froehlich|Dillahunt|Klasnja|Mankoff|2009}} less waste,{{sfn|Thieme|Comber|Miebach|Weeden|2012}} etc.

One common technique is to facilitate people's awareness of benefits for performing eco-friendly behaviors. For example, a review of over twenty studies exploring the effects of feedback on electricity consumption in the home showed that the feedback on the electricity consumption pattern can typically result in a 5–12% saving.{{sfn|Fischer|2008}} Besides the environmental benefits such as {{CO2}} savings, health benefit, cost are also often used to promote eco-friendly behaviors.{{sfn|Froehlich|Dillahunt|Klasnja|Mankoff|2009}}

Despite the promising results of existing persuasive technologies, there are three main challenges that remain present.

Persuasive technologies developed relies on self-report or automated systems that monitor human behavior using sensors and pattern recognition algorithms. Several studies in the medical field have noted that self-report is subject to bias, recall errors and low adherence rates. The physical world and human behavior are both highly complex and ambiguous. Utilizing sensors and machine learning algorithms to monitor and predict human behavior remains a challenging problem, especially that most of the persuasive technologies require just-in-time intervention.

In general, understanding behavioral changes require long-term studies as multiple internal and external factors can influence these changes (such as personality type, age, income, willingness to change and more). For that, it becomes difficult to understand and measure the effect of persuasive technologies.

Furthermore, meta-analyses of the effectiveness of persuasive technologies have shown that the behavior change evidence collected so far is at least controversial, since it is rarely obtained by Randomized Controlled Trials (RCTs),{{sfn|Hamari|Koivisto|Pakkanen|2014}} the “gold standard” in causal inference analysis. In particular, due to relevant practical challenges to perform strict RCTs,{{sfn|Bhushan|Steg|Albers|2018}} most of the above-mentioned empirical trials on lifestyles rely on voluntary, self-selected participants. If such participants were systematically adopting the desired behaviors already before entering the trial, then self-selection biases would occur. Presence of such biases would weaken the behavior change effects found in the trials. Analyses aimed at identifying the presence and extent of self-selection biases in persuasive technology trials are not widespread yet. A study by Cellina et al. on an app-based behavior change trial in the mobility field found evidence of no self-selection biases.{{sfn|Cellina|Vittucci Marzetti|Gui|2021}} However, further evidence needs to be collected in different contexts and under different persuasive technologies in order to generalize (or confute) their findings.{{citation needed|date=August 2021}}

The question of manipulating feelings and desires through persuasive technology remains an open ethical debate. User-centered design guidelines should be developed encouraging ethically and morally responsible designs, and provide a reasonable balance between the pros and cons of persuasive technologies.{{sfn|Ijsselsteijn|De Kort|Midden|Eggen|2006}}

In addition to encouraging ethically and morally responsible designs, Fogg believes education, such as through the journal articles he writes, is a panacea for concerns about the ethical challenges of persuasive computers.{{sfn|Fogg|1998}} Fogg notes two fundamental distinctions regarding the importance of education in engaging with ethics and technology: "First, increased knowledge about persuasive computers allows people more opportunity to adopt such technologies to enhance their own lives, if they choose. Second, knowledge about persuasive computers helps people recognize when technologies are using tactics to persuade them."{{sfn|Fogg|1998}}

Another ethical challenge for persuasive technology designers is the risk of triggering persuasive backfires, where the technology triggers the bad behavior that it was designed to reduce.{{sfn|Stibe|Cugelman|2016}}

Other subjects which have some overlap or features in common with persuasive technology include:

• Advertising
• Artificial intelligence
• Brainwashing
• Captology
• Coercion
• Collaboration tools (including wikis)
• Design for behaviour change
• Personal coaching
• Personal grooming
• Propaganda
• Psychology
• Rhetoric and oratory skills
• Technological rationality
• T3: Trends, Tips & Tools for Everyday Living

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• {{cite web |title=The Ethical Use of Persuasive Technology |url=https://behaviordesign.stanford.edu/ethical-use-persuasive-technology |website=Stanford Behavior Design Lab }}
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Category:Human communication

Category:Human–computer interaction

Category:Persuasion