How Does Quality Content Translate into Brand Equity? The Serial Mediating Role of Perceived Credibility and Parasocial Relationships in the Instagram Influencer Context
This study demonstrates that Instagram content quality enhances brand equity not directly, but through a sequential mediation process where high-quality content first builds perceived credibility, which then fosters parasocial relationships that ultimately drive brand value.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
In the crowded digital marketplace, brands no longer shout from a single stage; they whisper through the voices of people we follow. This shift has given rise to influencer marketing, a practice where individuals with dedicated online audiences promote products to their followers. For a company, the goal is to build brand equity, which is simply the total value a brand holds in the minds of consumers—how much people prefer it, trust its quality, and remain loyal to it. But how does a simple post on a screen turn into that deep sense of value? The answer lies in the quality of the content itself and the invisible bonds it forges. When a follower sees a post, they first judge the information: is it honest, useful, and well-made? This is their assessment of credibility. If the content passes that test, something deeper can happen: a parasocial relationship. This is a one-sided emotional connection where the follower feels they know the influencer personally, even though the influencer does not know them back. Understanding how these steps connect is vital because it tells us whether brands are buying influence or just buying numbers.
A team of researchers from Mardin Artuklu University set out to map this exact journey. They wanted to see if high-quality content from Instagram influencers directly boosts a brand's value, or if it works through a more complex chain of trust and emotional attachment. To find out, they surveyed 515 active Instagram users who regularly follow at least one influencer. These participants were asked to think about a specific influencer they follow and answer questions about the quality of that person's posts, how much they trust them, how close they feel to them, and how they view the brands that influencer promotes. The researchers then used a statistical method to trace the path from the content to the final brand perception, looking for the hidden steps in between.
The study revealed that the path from a good post to a valuable brand is not a straight line, but a sequence. First, the researchers confirmed that when an influencer posts content that is informative, up-to-date, and consistent, followers immediately view that influencer as more credible. This makes sense; a well-crafted message signals expertise and honesty. However, the study found a surprising twist in how this credibility works. While trust is essential, it does not directly make a brand more valuable on its own. Instead, trust acts as a bridge. When followers trust an influencer, they are more likely to develop that deeper, emotional parasocial bond. It is this emotional connection, rather than the trust itself, that directly lifts the brand's value in the consumer's mind.
The researchers also discovered that high-quality content has a dual role. It builds trust, which then strengthens the emotional bond, but it also directly fosters that emotional bond without needing trust as a middleman. A fascinating, absorbing post can make a follower feel close to the creator simply because the content is enjoyable and engaging. Once this emotional tie is formed, it spills over onto the brands the influencer recommends. The study showed that the strongest driver of brand value is this emotional attachment. The data indicated that the most effective path for a brand is when high-quality content first establishes the influencer's credibility, which then deepens the follower's emotional connection, and finally, that connection translates into a stronger, more valuable brand.
This finding challenges a common assumption in the industry. Many brands focus heavily on the size of an influencer's audience, believing that more followers automatically mean more value. The research suggests this is a poor guide. A large following does not guarantee that the content is good enough to build trust or that the influencer can form a genuine emotional bond with their audience. The study implies that brands would be better served by investing in the quality of the content itself and in the deliberate cultivation of these emotional ties. The evidence points to a multistage mechanism where the brain's assessment of trust and the heart's feeling of attachment work in sequence. In the end, the value of a brand promoted on Instagram depends less on how many people are watching and more on how well the content makes those viewers feel they know and trust the person behind the screen.
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