"Digital Marketing and Consumer Psychology" by M. Thomas, B. Brace-Govan, and A. James. This paper explores the ways in which digital marketing impacts consumer psychology and behavior, and identifies some of the key gaps in the research.

"The Role of Arousal in Affecting Online Consumer Behavior" by A. Hemetsberger and M. Reinhardt. This paper examines how emotional arousal impacts online consumer behavior, and identifies areas where further research is needed.

"The Psychology of Social Media Marketing" by L. Dubois and C. Laurent. This paper explores the psychological factors that drive social media marketing, including factors such as social influence, self-presentation, and social comparison.

"The Role of Personalization in Digital Marketing" by S. C. H. Park and J. H. Kim. This paper examines the role of personalization in digital marketing, and identifies some of the key challenges and opportunities in this area.

"Online Advertising and Its Impact on Consumer Behavior" by P. Gaur and M. L. Choudhary. This paper examines the impact of online advertising on consumer behavior, including factors such as attention, motivation, and persuasion.

The psychological matrix of digital marketing refers to the psychological factors that influence consumer behavior and decision-making in the context of digital marketing. These factors include:

Perception: This refers to how consumers perceive digital marketing messages, including the visual design, messaging, and branding of digital content.

Motivation: Consumers' motivations for engaging with digital marketing can vary depending on their needs, goals, and desires. Understanding these motivations can help marketers create content that resonates with their target audience.

Attitude: Consumers' attitudes towards digital marketing can be influenced by various factors such as trust, credibility, and perceived value. A positive attitude towards digital marketing can increase the likelihood of engagement and conversion.

Learning: Consumers' learning and knowledge acquisition through digital marketing channels can influence their decision-making process. Marketers can use various methods such as educational content, tutorials, and reviews to enhance consumer learning.

Memory: Consumers' memory of digital marketing messages and brand impressions can affect their long-term brand loyalty and repeat purchase behavior. Repetition, consistency, and emotional appeal can help create lasting brand memories.

Emotion: Consumers' emotional responses to digital marketing messages can play a significant role in their decision-making process. Emotional appeals such as humor, fear, or joy can increase engagement and conversion.

Understanding and leveraging these psychological factors can help digital marketers create more effective and impactful campaigns that resonate with their target audience.