In personality psychology, it is often assumed that personality traits represent relatively stable patterns of behavior and experience. However, recent research and conceptual work challenge this assumption and discuss various approaches to modifying personality traits through targeted interventions. In this article, we examine different intervention models and their underlying mechanisms.



Behavioral activation to increase conscientiousness

A well-known model for personality change is that of behavioral activation, which aims to increase conscientiousness. This model focuses on increasing participation in goal-directed activities that are perceived as important and enjoyable and that align with individual values and goals. Regularly practicing new behavioral activities can lead to lasting changes in personality traits in the long term, as these new behaviors become habits (Magidson et al., 2014; Roberts, Hill, & Davis, 2017).

Cognitive and behavioral interventions

Another approach is based on cognitive and behavioral interventions to increase personality traits such as conscientiousness or reduce negative emotions. For example, cognitive behavioral techniques, such as mindfulness techniques, can help people react more flexibly to stressful situations and better manage neurotic thoughts and feelings (Armstrong & Rimes, 2016; Javaras et al., 2019; Sauer-Zavala et al., 2017).

Self-regulation processes



Self-regulation processes also play a central role in many intervention models. These approaches aim to influence both short-term processes, such as the activation and selection of goals, and long-term processes, such as the repetition of behavior to form habits (Hennecke et al., 2014; Nevins, 2021; Rebele et al., 2021).

Step-by-step coaching model

One of the first conceptual models for intentional personality change is the step-by-step coaching model, which comprises ten specific steps. These range from assessing the client's personality and values, through discovering the current self and exploring gaps between the actual and desired self, to implementing and evaluating the coaching plan (Martin et al., 2014). This model provides concrete guidelines for intervention methods and activities at each stage of the process.

Generic Change Factors Model (GCF)



An innovative approach is the Generic Change Factors (GCF) model developed by Allemand and Flückiger (2017). Inspired by clinical and psychotherapeutic process-outcome literature, the GCF model identifies four general change factors: discrepancy awareness, strengths, insight, and behavioral practice. These factors are intended to maximize the effectiveness of personality change interventions by promoting support, learning, and action for individuals.



• Discrepancy awareness: By becoming aware of differences between the desired and the actual self, the motivation to change can be increased.
• Activating strengths: Utilizing existing strengths and resources can initiate and maintain positive feedback loops and expectations.
• Promoting insight: Through self-reflection, people should develop a better understanding of their assumptions, expectations, and motivations.
• Behavioral practice: Learning and practicing new behaviors should help people adapt to new social roles and internalize these behaviors in the long term.
  

Research in the field of personality change is still in its early stages, but the existing findings and conceptual models offer promising approaches. Understanding the underlying mechanisms and the targeted application of various intervention strategies can contribute to effective and lasting changes in personality traits. The GCF model and other intervention models offer valuable heuristic principles and practical guidelines to support and further develop this process.