The concept of high sensitivity, often referred to as Sensory Processing Sensitivity (SPS), describes a trait characterized by a deeper processing of sensory information and heightened emotional and physiological reactivity to environmental stimuli. Individuals with this trait may experience a more easily aroused nervous system, leading to feelings of being overwhelmed in highly stimulating environments. This trait, while presenting challenges in contexts such as large crowds, loud music, or intense media, is also associated with depth of processing, empathy, and aesthetic sensitivity. The need for culturally validated assessment tools is critical for accurate identification and support within diverse populations. This article explores the cross-cultural adaptation and validation of the Highly Sensitive Person Scale (HSPS) for the adult Spanish population, based on a peer-reviewed research study, and discusses its relevance for therapeutic frameworks focused on emotional regulation, anxiety reduction, and resilience building.
The original HSPS, developed by Aron and Aron for a North American population, is a 27-item self-report instrument designed to identify individuals with the high sensitivity trait. Initial research indicated a unidimensional structure, but subsequent studies across Europe, Asia, and Central America have suggested potential multidimensionality, with factor structures ranging from two to four factors. These factors often include dimensions such as ease of excitation (EOE), low sensory threshold (LST), and aesthetic sensitivity (AES). For instance, one adult population study proposed a two-factor model comprising low sensory threshold (LST) and ease of excitation (EOE). Other research identified a dimension called processed sensitivity (PS) while maintaining the low sensory threshold factor in a 16-item version. A three-factor structure comprising aesthetic sensitivity (AES), low sensory threshold (LST), and ease of excitation (EOE) has also been proposed, referring to aesthetic awareness of the setting, unpleasant sensory excitation, and a feeling of being overwhelmed by external and internal stimuli, respectively. Despite the growing social interest in high sensitivity, there were no validated instruments for the Spanish population prior to this adaptation, creating a gap in culturally competent assessment.
The cross-cultural adaptation and validation of the HSPS for the Spanish population (HSPS-S) was conducted through two sequential studies. The primary objective of the first study was the linguistic and cultural adaptation of the original English version for adult Spanish speakers. The second study focused on examining the psychometric properties of the Spanish version, including its factor structure and factorial invariance across gender. The researchers sought to determine whether the HSPS-S would maintain a unidimensional factor structure similar to the original or align with the multidimensional structures found in other cultural validations.
Cross-Cultural Adaptation Process
The adaptation and translation of the HSPS to Spanish were performed by bilingual experts following established reverse translation methods and international guidelines for test translation and adaptation. A committee of eight experts, including health sciences professionals, university professors, and psychologists (two of whom were clinical psychologists), evaluated the semantic and contextual equivalence between the original English HSPS and the Spanish version. This committee ensured that all 27 items from the original scale were retained in the HSPS-S, preserving the core content while adapting it for linguistic and cultural relevance within a Spanish context.
The original HSPS is a self-report test consisting of 27 items with seven answer choices rated on a Likert-type scale from 1 (not at all) to 7 (extremely). Scores range from 27 to 189, with higher scores indicating greater sensory sensitivity. In its original research, the scale demonstrated strong internal consistency, with Cronbach's alpha scores of 0.87 and 0.85. The Spanish adaptation maintained this item count and scaling, allowing for direct comparison with the original instrument while ensuring cultural appropriateness for Spanish-speaking individuals.
Validation Study and Psychometric Analysis
The validation study (Study 2) examined the psychometric properties of the HSPS-S. The researchers aimed to analyze its factor structure to see if it fit a unidimensional model similar to the original or a multi-factor structure as seen in other countries. They also tested for factorial invariance across gender, which is crucial for ensuring that the scale measures the same construct similarly for both men and women in the Spanish population.
The study utilized convenience sampling by participant accessibility. The participants were from all autonomous regions of Spain, with the highest representation from Catalonia (20.11%), Madrid (19.41%), Andalusia (14.18%), Valencia (8.56%), and Galicia (6.58%). Their occupations were diverse, primarily in education (12.28%), healthcare (9.77%), administration/management (8.17%), trade (4.99%), hotel/restaurant (3.55%), and information and communication technology (3.35%). This broad demographic distribution helps in assessing the scale's applicability across various segments of the Spanish adult population.
The test administration was conducted online over a period from October 2019 through September 2020. Participants were contacted through populations of highly sensitive people, interested associations, and professionals and staff of Spanish universities for diffusion. The tests were administered anonymously, taking approximately 45–60 minutes to complete. After reading a brief introduction with the study objectives, participants provided informed consent. Participation was voluntary, anonymous, and uncompensated. Participants could withdraw at any time. The study was approved by the Doctoral Studies Program Academic Committee of the International Doctoral School of the University of Seville (EIDUS), and data protection measures were implemented in compliance with Organic Law 3/2018 on data protection and guarantee of digital rights.
The results of the translation and linguistic adaptation confirmed that the committee of experts found semantic and contextual equivalence, and all 27 items were retained in the HSPS-S. The validation study's findings on the factor structure and psychometric properties are central to determining the scale's utility for clinical and research purposes in Spanish-speaking populations.
Relevance for Therapeutic Interventions and Mental Health
The availability of a validated HSPS-S has significant implications for therapeutic interventions and mental health practices targeting individuals with high sensitivity. Accurate identification of this trait is a foundational step in developing personalized therapeutic strategies. High sensitivity is often associated with conditions such as anxiety, stress, and emotional dysregulation, particularly in environments that are overstimulating. Individuals with this trait may seek to avoid large crowds, loud music, or violent movies, feeling a need to "run for cover," a reaction that others with lower sensitivity may not understand. This aligns with the therapeutic need for anxiety reduction and emotional regulation techniques.
In a clinical context, understanding a client's sensory processing sensitivity can inform the selection of evidence-based practices. For example, trauma-informed care must consider that a highly sensitive nervous system may be more easily aroused and potentially more vulnerable to feeling overwhelmed by external and internal stimuli. Therapists can adapt interventions such as mindfulness-based stress reduction, grounding techniques, and exposure therapy in a gradual, titrated manner to avoid overwhelming the client's sensory threshold. The factor of low sensory threshold (LST) suggests that individuals may be more reactive to sensory input, requiring a calm, predictable therapeutic environment. The ease of excitation (EOE) factor points to a propensity for feeling overwhelmed, which can be addressed through resilience-building strategies and emotional regulation skills.
While the provided source material focuses on the validation of an assessment tool and does not detail specific hypnotherapy protocols or subconscious reprogramming techniques, the identification of high sensitivity through the HSPS-S can guide the application of such methods. For instance, in hypnotherapy, understanding a client's heightened sensitivity can help the therapist tailor induction and deepening techniques to be more gentle and paced appropriately, avoiding sensory overload. Similarly, subconscious reprogramming techniques for habit modification or phobia resolution might need to be delivered with greater emphasis on safety and gradual progression for highly sensitive individuals.
The multidimensional nature of high sensitivity, as suggested by various factor structures, underscores the importance of a nuanced assessment. A client may score highly on the aesthetic sensitivity dimension but have a lower sensory threshold, indicating a different set of therapeutic needs compared to someone who scores high primarily on ease of excitation. This specificity allows mental health professionals to move beyond a one-size-fits-all approach and develop targeted interventions that address the unique interplay of a client's sensitivities.
Furthermore, the cross-cultural adaptation of the HSPS-S ensures that these therapeutic considerations can be applied effectively within Spanish-speaking communities, both in Spain and potentially in other Spanish-speaking countries. This is crucial for reducing stigma and promoting mental health literacy, as individuals can better understand their experiences through a culturally validated lens. The scale can be a tool for psychoeducation, helping clients recognize that their sensitivity is a trait, not a disorder, and that with appropriate strategies, they can flourish in their environment.
Conclusion
The cross-cultural adaptation and validation of the Highly Sensitive Person Scale for the adult Spanish population (HSPS-S) represents a significant advancement in the assessment of sensory processing sensitivity within a Spanish-speaking context. The rigorous process, involving expert translation, cultural adaptation, and psychometric validation, ensures that the scale is a reliable and valid tool for identifying highly sensitive individuals. The retention of the original 27 items and the exploration of its factor structure—whether unidimensional or multidimensional—provide a foundation for future research and clinical application.
For mental health professionals, the HSPS-S offers a means to accurately identify clients with high sensitivity, which is essential for tailoring therapeutic interventions. This trait, characterized by a more easily aroused nervous system and a tendency to feel overwhelmed by intense stimuli, has direct implications for anxiety reduction, stress management, and emotional regulation strategies. While the source material does not specify particular therapeutic techniques, the identification of high sensitivity through this validated scale informs a range of evidence-based practices, from trauma-informed care to the adaptation of hypnotherapy and subconscious reprogramming methods. Ultimately, the HSPS-S contributes to a more nuanced understanding of individual differences, enabling clinicians to provide compassionate, effective, and culturally competent care that supports the well-being and resilience of highly sensitive individuals in Spanish-speaking societies.