Suggestion Effect: The Hidden Force Shaping Excellent Teams and Employee Potential

The Suggestion Effect（暗示效应）, also known as the Pygmalion Effect（皮格马利翁效应）, the Rosenthal Effect（罗森塔尔效应） or the Expectancy Effect（期望效应）, was first explicitly verified and named in 1968 by psychologists Robert Rosenthal and Lenore Jacobson through an educational experiment.

Business Management Story: Smith’s ‘Expectation Reshaping’ Experiment

In early 2024, the software testing team at ‘Agile Technologies’ in Austin, USA, was experiencing a slump in performance. During the quarterly review, their defect detection rate lagged behind industry benchmarks, and team morale was low; members generally viewed testing as ‘tedious fault-finding’ and felt it lacked value. Smith, the newly appointed Quality Director, did not rush to replace staff or apply pressure. He keenly sensed that the team’s performance might be constrained by a negative ‘Suggestion Effect’—namely, the implicit label that ‘testing roles are unimportant’, held by both managers and team members themselves, which was subtly limiting their potential.

Smith decided to launch a six-month ‘Expectation Reshaping’ programme. He began by completely overhauling the language he used when communicating with the team. At a company-wide meeting in March, he announced that the team would be renamed the ‘Product Reliability Guardians’ and emphasised: ‘You are not merely the final line of defence against errors, but the first designers of the user experience. Every potential issue you uncover prevents thousands of users from having a poor experience before it even arises.’ Secondly, he introduced the ‘Guardians of Excellence Weekly Report’, which publicly recognised engineers who had uncovered complex, hidden or high-business-value defects, detailing how their discoveries had enhanced product quality.

More importantly, in April, Smith introduced a ‘double-blind testing’ system: without the participants’ knowledge, a version in which the ‘Guardians’ team had been deeply involved was compared in a small-scale user experience test against another version that had undergone only routine testing. The data showed that user satisfaction was significantly higher for the former. When Smith presented this data report to the team in June, it had a profound impact on their understanding.

By the end of the third quarter of 2024, the changes had exceeded expectations. Not only had the team’s defect detection rate increased by 30 per cent, but several members had also taken the initiative to develop automated testing tools and share them within the company. A senior test engineer remarked: “I used to think of myself as a fault-finder; now I believe I am a co-creator of the product’s success.” Smith concluded: “People are often shaped by the expectations of others, particularly those in positions of authority. The most powerful signals sent by managers are often not the instructions themselves, but the unspoken, profound suggestions about ‘who you are’ and ‘who you can become’.”

What is the Suggestion Effect?

The Suggestion Effect（暗示效应）, also known as the Pygmalion Effect（皮格马利翁效应）, the Rosenthal Effect（罗森塔尔效应） or the Expectancy Effect（期望效应）, was first explicitly verified and named in 1968 by psychologists Robert Rosenthal and Lenore Jacobson through an educational experiment.

The ‘Suggestion Effect’ refers to the phenomenon whereby people unconsciously accept suggestions, descriptions, labels or expectations from others (particularly authority figures) or their environment, and adjust their cognition, attitudes and behaviour accordingly, thereby steering outcomes in the direction anticipated by the suggestion. This is a powerful socio-psychological influence, demonstrating that beliefs and expectations can shape reality.

In organisational behaviour, the ‘Suggestion Effect’ is ubiquitous and immensely powerful. Managers’ words and actions, performance appraisals, the way tasks are assigned, and even their inadvertent facial expressions all convey ‘suggestions’ to employees regarding their capabilities, value and future potential. Positive suggestions (such as ‘You’re a master at problem-solving’ or ‘This project is tailor-made for you’) can inspire employees’ self-confidence, sense of responsibility and outstanding performance, creating a virtuous cycle; whereas negative suggestions (such as ‘You’re always careless’ or ‘This task is too difficult for you’) may lead employees to set limits on themselves, shy away from challenges, or even experience ‘self-fulfilling prophecy’-style failure. An outstanding organisational culture understands how to consciously utilise positive suggestions to foster a high-performing team atmosphere and enable employees to realise their full potential.

I. The Theoretical Origins and Mechanisms of the Suggestion Effect

1.1 Academic Origins: From Hypnosis to Social Psychology

Systematic research into the Suggestion Effect can be traced back to the 19th-century French psychiatrist Hippolyte Bernheim. In his research as part of the Nancy School, he discovered that even without the use of hypnosis, verbal suggestion alone could induce physiological responses—such as limb numbness and altered temperature perception—in 70 per cent of subjects. In the early 20th century, the Russian physiologist Ivan Pavlov further validated this in his experiments on conditioned reflexes: repeated ringing of a bell could trigger conditioned salivation in dogs.

Modern psychology defines the Suggestion Effect as the process by which an individual unconsciously accepts a certain viewpoint or triggers a specific behavioural response through the direct or indirect transmission of information. The intensity of this effect is influenced by three factors: the authority of the source of suggestion, the frequency of the information, and the psychological state of the recipient.

1.2 Mechanisms of Action from a Neuroscientific Perspective

The neural mechanisms underlying the Suggestion Effect involve three key brain regions:

• Prefrontal cortex: Reduced activity in the region responsible for logical judgement leads to a weakening of critical thinking;
• Limbic system: The emotional centre is activated, enhancing emotional resonance with the suggestive information;
• Basal ganglia: Repetitive suggestion leads to the formation of automated behavioural patterns.

Functional magnetic resonance imaging (fMRI) studies show that when individuals receive positive suggestions, dopamine secretion increases by an average of 27 per cent, which explains why suggestions can directly influence behavioural motivation.

II. Practical Applications of the Suggestion Effect in Everyday Life

2.1 Covert Manipulation of Consumer Decisions

The commercial sector uses multi-dimensional suggestions to guide consumer behaviour:

• Price anchoring strategies: A home appliance brand placed a ‘flagship model’ priced at 12,000 yuan next to a new washing machine priced at 8,000 yuan, resulting in a 130 per cent increase in sales of the former;
• Environmental cue design: Supermarkets position their bakery sections near the entrance, using the aroma to trigger additional food purchases by 68 per cent of customers;
• Scarcity messaging: ‘Today only’ prompts increased the rate of impulse purchases on e-commerce platforms by 45 per cent.

2.2 Shaping Expectations in Educational Settings

The Suggestion Effect acts as a lever in the transmission of knowledge:

• Teacher labelling experiment: Students told they were ‘mathematically gifted’ scored 19 points higher on tests three months later than the control group;
• Classroom environmental cues: In laboratories displaying portraits of Nobel laureates, the output of innovative student proposals increased by 33 per cent;
• Exam paper design techniques: Adding the prompt ‘This question is suitable for those with strong logical reasoning skills’ next to a question increased the correct answer rate by 22 per cent.

2.3 Psychological Interventions in Health Management

The medical field utilises the Suggestion Effect to enhance treatment outcomes:

• Placebo packaging: Vitamin tablets labelled as ‘miracle cure’ achieved an efficacy rate of up to 51 per cent in chronic pain relief trials;
• Consultation room environment cues: Consultation rooms adorned with photographs of successful recovery cases saw a 40 per cent increase in patient treatment adherence;
• Psychological cues in exercise: Gym mirrors bearing the message ‘Burning fat’ resulted in an 18-minute increase in members’ average training duration.

III. Applying the Suggestion Effect in the Workplace

3.1 Suggestion Techniques in Leadership Communication

Managers influence team performance through linguistic framing:

• Optimising goal statements: Changing “We must reduce the error rate by 15 per cent this quarter” to “We have the capability to achieve an 85 per cent accuracy rate” resulted in a 29 per cent increase in execution efficiency;
• Restructuring crisis messaging: When implementing redundancies, a certain company used the phrase ‘organisational efficiency upgrade’ instead of ‘cost-cutting’, resulting in a 21 per cent increase in staff retention;
• Email subject line design: Emails containing the labels ‘urgent’ or ‘critical’ saw an average response time 3.2 times faster.

3.2 Shaping Mindsets in the Organisational Environment

The suggestive power of physical spaces and institutional design:

• Office colour experiments: Blue-toned walls increased employees’ concentration by 19 per cent, whilst red-toned walls boosted the output of creative meetings by 27 per cent;
• Implications of meeting table shape: Round meeting tables resulted in a 34 per cent higher approval rate for proposals compared to rectangular tables;
• Attendance policy design: A ‘flexible core working hours’ system reduced the late arrival rate by 58 per cent compared to a ‘fixed clocking-in system’.

3.3 Psychological Empowerment in Talent Development

Suggestion strategies within employee development systems:

• Design of job titles: The title ‘Senior Expert’ increases the time employees spend on self-directed learning by 41 per cent;
• Choice of training venue: Holding internal training at industry summit venues boosts knowledge retention by 33 per cent;
• The art of project naming: Analogies such as the ‘Moon Landing Programme’ accelerate cross-departmental collaboration response times by 2.8 times.

IV. Comparative Analysis of Related Psychological Effects

The following are psychological mechanisms associated with or easily confused with the Suggestion Effect:

Effect Name	Proposer	Core Mechanism	Typical Scenario	Differences from the Suggestion Effect
Anchoring Effect	Tversky	Initial information influences subsequent judgements	Price negotiations	Relies on numerical references rather than the implantation of ideas
Hawthorne Effect	Elton Mayo	Behavioural changes triggered by being observed	Experimental research	No need to actively apply suggestion
Pygmalion Effect	Rosenthal	Self-performance enhanced by others’ expectations	Educational management	A sub-category of the Suggestion Effect
Barnum Effect	Bertram Fowler	Acceptance of vague personality descriptions	Astrological analysis	Suggestion targeting self-perception

V. Methods for Applying the Suggestion Effect in Organisational Behaviour and Human Resource Management

5.1 Leadership Communication

Conveying Positive, Specific Expectations

Method: Managers should consciously use constructive, future-oriented language. When assigning tasks, instead of saying ‘Don’t mess this up’, say ‘I am confident you can find a creative solution’. When providing feedback, focus on behavioural improvement rather than personal criticism (e.g. ‘The data analysis in this report could be more in-depth’ rather than ‘You’re too superficial’). Openly express confidence in the team and its members’ capabilities.

Example: At a project kick-off meeting, a leader might say: ‘We have assembled this team precisely because each of you possesses unique experience in tackling such complex challenges. I look forward to seeing how you will work together to overcome this one.’

5.2 Performance Management

Implementing ‘Growth-Oriented’ Appraisal and Development Discussions

Method: In performance appraisals, minimise the ‘judgemental’ tone and emphasise a ‘development-oriented’ approach. Use ‘growth mindset’ language, viewing shortcomings as ‘areas for development’. When jointly drawing up development plans, highlight the strengths the employee has already demonstrated and their future potential, implying that they have the capacity to grow.

Example: During a performance review, a manager says: “You have demonstrated strong empathy in cross-departmental coordination (strength). If we were to systematically apply this skill to client negotiations (expectations and linkages), I believe you could become an expert in this area by next year.”

5.3 Talent Identification and Succession Planning

Publicly Assigning the ‘High-Potential’ Label and Providing Opportunities

Method: Carefully yet clearly identify high-potential talent and assign them challenging tasks, special projects or mentoring resources that align with the ‘high-potential’ implication. This public demonstration of trust and the provision of opportunities in itself serves as a powerful positive suggestion, motivating them to realise their potential. At the same time, ensure opportunities are distributed fairly to avoid creating a ‘favouritism’ culture.

Example: Have a high-performing young engineer deliver the keynote presentation at a key technical review meeting, introducing them as “a deep thinker in this emerging field”.

5.4 Shaping the Environment and Culture

Designing Physical and Institutional Environments Rich in Empowering Suggestions

Method: Office layout, award names and the language used in internal communications should all convey positive values such as ‘innovation’, ‘trust’, ‘excellence’ and ‘growth’. Establish systems that encourage trial and error and celebrate learning (even from failure), signalling that ‘exploration and growth are more important than avoiding mistakes’.

Example: Recognise the ‘Best Failure Debrief Award’ with the same level of importance as the ‘Innovation Award of the Year’.

VI. Methods for Applying the Suggestion Effect in Corporate Marketing and Consumer Behaviour

6.1 Pricing and Promotional Strategies

Utilising ‘Anchoring’ and ‘Scarcity’ Suggestions

Method: By setting a relatively high original price (the ‘anchor’), the discounted price appears particularly good value; using phrases such as ‘limited time and quantity’ or ‘only X items left’ implies that the product is in high demand and popular, thereby stimulating a sense of urgency and the desire to purchase.

Example: An e-commerce page displays: ‘Original price 299, Today’s special price 299, Today’s special price 199, only 3 items left in stock’.

6.2 Product Packaging and In-Store Display

Shaping Perceptions of “High Quality” and “Trendiness”

Method: Exquisite packaging, substantial materials and professional layout design all imply the product’s high quality and the brand’s strength. Placing the product alongside bestsellers or in specific themed sections suggests it belongs to the same category of popular or high-end products.

Example: A newly launched craft beer, presented in a heavy glass bottle with an artistic label, is displayed in the imported beer section.

6.3 Advertising and Brand Narrative

Building “Identity” and “Emotional Connection”

Method: Rather than directly promoting product features, advertisements depict a lifestyle, set of values or user persona (such as ‘independent thinkers’, ‘successful individuals’ or ‘family-oriented parents’). By implying that ‘people who use this product are exactly this sort of person’, they entice consumers to purchase the product in order to attain that sense of identity.

Example: An advert for an off-road vehicle does not emphasise technical specifications, but instead shows the vehicle traversing magnificent mountain landscapes, implying that the owner possesses a spirit of exploration, freedom and non-conformity.

6.4 Word-of-Mouth and Social Proof

Amplifying the Implicit Power of ‘Others’ Choices’

Method: Actively showcase user reviews, expert recommendations, best-seller statistics and a wealth of user-generated content on social media. This information strongly implies that the product is ‘the wise choice of the majority’ or ‘recognised by authorities’, effectively reducing decision-making risk for new consumers.

Example: Prominently displaying ‘Over 100,000 five-star reviews’ and ‘Editor’s Choice Award from XX Magazine’ on the product page of the official website.

The Suggestion Effect reveals the plasticity of the human cognitive system: decision-making patterns of individuals and groups can be systematically influenced through channels such as environmental cues, linguistic frameworks and behavioural models.

In the consumer sector, price anchoring and suggestions of scarcity continue to drive irrational purchasing; in healthcare settings, the placebo effect demonstrates that psychological suggestion can directly influence physiological responses; and in the workplace, spatial design and communication techniques serve as invisible levers of effectiveness. Compared with single mechanisms such as the anchoring effect, the distinctive feature of the Suggestion Effect lies in the diversity of its dimensions of influence—it can exert an impact both through conscious linguistic communication and via subconscious environmental influences.

However, the double-edged nature of this effect must not be overlooked: positive suggestions of achievement can unlock potential, whilst negative suggestions of crisis may trigger collective anxiety. Mastering the scientific boundaries of the Suggestion Effect requires a precise understanding of the recipient’s psychological state, cultural background and the channels through which information is received.

VII. The Evolution and Summary of the Suggestion Effect

7.1 The Evolution of the Suggestion Effect

1. The classic experiment by Rosenthal and Jacobson (1968)

Their ‘Pygmalion in the Classroom’ experiment, conducted in a primary school, demonstrated that teachers’ false but positive expectations (suggestions) regarding pupils’ intellectual development could significantly raise those pupils’ IQ scores. This provided rigorous experimental evidence for the ‘Suggestion Effect’, establishing the core notion that expectations can shape reality, and introducing it into the fields of education and management.

2. Applied Research in Organisational Behaviour and Management (1970s–1980s)

Management scholars applied this effect to the workplace, investigating how leaders’ expectations influence the performance of their subordinates. Research confirmed that when managers hold high expectations of a subordinate, they unconsciously provide more support, assign more challenging tasks and offer more positive feedback, thereby catalysing the subordinate’s growth into a high-performing individual who meets those expectations. This laid part of the psychological foundation for the concepts of ‘coaching leadership’ and ’empowerment’.

3. Integration with the ‘Labelling Effect’ and the ‘Self-fulfilling Prophecy’

Subsequent research has combined the ‘Suggestion Effect’ with broader concepts in social psychology. The ‘labelling effect’ emphasises that labels attached to individuals or groups (such as ‘innovative team’ or ‘problem employee’) guide their behaviour to align with those labels. The ‘self-fulfilling prophecy’ describes the process whereby an individual’s belief that a certain expectation (whether positive or negative) is true leads them to take actions that ultimately make that expectation a reality. Suggestion serves as the initial spark that sets all this in motion.

4. New Perspectives from Neuroscience and Positive Psychology (21st Century)

Modern research from a neuroscientific perspective has revealed that positive expectations and suggestions can influence an individual’s neurotransmitter secretion (such as dopamine), thereby enhancing motivation, focus and resilience. Positive psychology, meanwhile, applies this to the identification and cultivation of strengths, advocating the conscious use of positive suggestions (focusing on strengths and possibilities) to promote the flourishing of individuals and organisations, as well as peak experiences.

7.2 Distinctions and Comparisons

In the evolutionary account, centred on the core concept of the ‘Suggestion Effect’, distinctions are drawn between closely related yet distinct concepts such as the ‘expectancy effect’, the ‘labelling effect’ and the broader ‘self-fulfilling prophecy’.

Dimensions of Comparison	Rosenthal’s ‘Expectancy Effect’	‘Labelling Effect’	Self-fulfilling prophecy’	Neuroscience/Positive Psychology Perspective
Source of Effect	Derived from the beliefs and expectations of others (particularly authority figures). Teachers or managers believe that pupils or subordinates are ‘capable’ or ‘incapable’.	Derived from assigned social classifications or labels. Individuals are labelled as ‘geniuses’, ‘troublemakers’, ‘innovators’, etc.	Stems from a prophecy or expectation held within the individual themselves. This expectation may originate from suggestions made by others or from self-perception.	Stems from physiological and psychological reactions triggered by positive or negative stimuli. Positive suggestions activate reward mechanisms and enhance cognitive states.
Mechanisms of Action	Because they hold certain expectations, authority figures unconsciously alter their behaviour (such as giving more attention, assigning more challenging tasks, or providing more positive feedback), thereby influencing the subject.	Labels provide a simplified social identity and script; both the individual and society work together to steer behaviour in a direction consistent with the label.	Because an individual believes a certain outcome will occur, they adopt attitudes and behaviours consistent with that belief, ultimately leading to the realisation of that outcome.	Positive suggestions optimise the brain’s neurochemical environment and cognitive functions, providing a physiological basis for high performance.
Key Focus Areas	The initiating role of the authority figure in two-way interaction.	The shaping power of social categorisation and identity formation.	The behavioural feedback loop driven by an individual’s inner beliefs.	The process of change in internal psychological and physiological states.
Key Metaphors	‘Rosenthal’s Roses’: because the gardener (teacher) believed that certain seeds (pupils) would produce more beautiful flowers, they were given extra care, and indeed they bloomed more beautifully—symbolising how external expectations are realised through behavioural mediation.	‘Putting on a prison uniform’: when a person is forcibly labelled a ‘prisoner’ and made to wear a prison uniform, their behaviour may begin to unconsciously align with society’s stereotypes of prisoners—symbolising the internalisation and enactment of external labels.	“The bank run prophecy”: because of rumours that a bank was about to collapse (the prophecy), depositors rushed to withdraw their money (the behaviour), with the result that the bank did indeed collapse due to a liquidity crisis (the prophecy was fulfilled) — symbolising how beliefs drive behaviour and shape reality.	‘The Brain’s Gym’: Positive suggestions are like providing the brain with beneficial exercise and nourishment, making its ‘muscles’ (cognitive abilities) more developed—symbolising the optimisation of one’s internal hardware.

7.3 Core Connections

These concepts form a complete chain of influence, extending from ‘external input’ through ‘internal processing’ to ‘external output’. Rosenthal’s expectation effect reveals the powerful initial driving force of external authority expectations. The labelling effect, meanwhile, describes how such external expectations often take the form of concise, fixed symbols (labels) and continue to exert an influence. When individuals accept these expectations or labels—whether actively or passively—and internalise them as their own beliefs, they form the key internal belief at the heart of the ‘self-fulfilling prophecy’.

Ultimately, this internal belief guides behaviour, causing the prophecy to come true. Neuroscience and positive psychology, meanwhile, delve into the ‘black box’ of this chain, investigating how positive suggestions and expectations optimise an individual’s state at both physiological and psychological levels, thereby enhancing their capacity to achieve positive outcomes. Together, they paint a comprehensive psychological map of how ‘suggestions’ move step by step from the external world into the mind, and then reshape external reality.

7.4 Summary Metaphors

Rosenthal’s ‘expectancy effect’: much like a coach who firmly believes a particular player has the makings of a champion, and from then on treats him with a different gaze and devises a unique training programme for him—symbolising the sowing of external beliefs and differentiated nurturing.

The ‘labelling effect’: much like presenting this person with a training top emblazoned with ‘champion-in-the-making’, a garment that constantly reminds both them and those around them of their ‘identity’—symbolising the conferral and consolidation of external identity.

‘Self-fulfilling prophecy’: The player himself believes deep down that he is a future champion, and so chooses to train harder whenever he feels exhausted and to pick himself up after every setback—symbolising the drive and realisation of internal belief.

Neuroscience/Positive Psychology Perspective: Because he firmly believes himself to be a champion, his brain releases higher levels of endorphins and dopamine, resulting in greater pain tolerance and sustained concentration; this enables him to endure high-intensity training more effectively—symbolising the biological optimisation of his physical and mental state.

References

• Neuroimaging research data cited from the February 2023 issue of Neuroscience;
• Consumer behaviour statistics sourced from Nielsen’s 2024 Global Consumer Insights Report;
• Workplace environment experimental data extracted from Steelcase’s 2023 Workplace Productivity White Paper;
• Case studies on the medical Suggestion Effect are referenced from the 2024 Lancet special issue on placebo research.
• Robert Rosenthal and Lenore Jacobson – The Pygmalion Effect in the Classroom: The Influence of Teachers’ Expectations on Students’ Intelligence.
• J. Sterling Livingston – The Pygmalion in Management: How Subordinates’ Achievements Are Shaped by Leaders’ Expectations (article in Harvard Business Review).
• Carol S. Dweck – Mindset: The New Psychology of Success: Research on ‘growth mindset’ and ‘fixed mindset’, which is closely related to the Suggestion Effect.
• Daniel Kahneman – Thinking, Fast and Slow: the book’s discussion of heuristics such as the ‘anchoring effect’ illustrates how the Suggestion Effect manifests in decision-making.
• Robert B. Cialdini – Influence: the six principles outlined in the book (such as social proof and scarcity) provide profound insights into the application of suggestion in persuasion and marketing.