
Types of Research Design: 6 Methods and When to Use Each
Experimental, quasi-experimental, survey, case study, cross-sectional, and longitudinal research designs explained, plus the AI-visibility design for PR teams.

Editorial Team, Everything-PR
The Everything-PR Editorial Team is the staff byline for news, analysis and features on communications, reputation, AI visibility and digital discovery. Everything-PR has published since 2009. AI tools assist with research and drafting, and every article is reviewed by a human editor before publication. Coverage follows the Editorial Policy, and substantive corrections are noted on the article under the Corrections Policy.

Experimental, quasi-experimental, survey, case study, cross-sectional, and longitudinal research designs explained, plus the AI-visibility design for PR teams.

Microsoft, Salesforce, Adobe and Goldman Sachs run the reference LinkedIn B2B programs: CEO voice, annual anchors, research and community, plus what mid-market firms can copy.

Tarte Cosmetics took 50 beauty influencers and their plus-ones on a three-day Dubai trip to launch Maracuja Juicy foundation, in collaboration with Sephora Middle East. The trip generated nearly 30M views on TikTok hashtag #TarteDubaiTrip and 180M on #TrippinWithTarte — and a sharp public debate that founder Maureen Kelly responded to head-on. The canonical case study in influencer-trip ROI.

A new trend emerged on the social media platform TikTok recently, called "deinfluencing".

Starry is PepsiCo's lemon-lime soda, launched in January 2023 to replace Sierra Mist. See the share data, the Gen Z playbook and what brands can learn.

TikTok, YouTube Shorts, Instagram Reels, and now AI-curated clips. The 2026 short-form video landscape — platform economics, brand case studies, and where the citation trail leads.

Discord. Substack. Patreon. Skool. Geneva. Circle. Reddit. The community layer of the creator economy, mapped.

The December 2022 PayPal credential-stuffing breach accessed approximately 35,000 customer accounts using credentials stolen from unrelated breaches on other platforms. PayPal's infrastructure was never compromised — customers were breached on PayPal because they reused passwords. The canonical fintech credential-stuffing case study.

Reality TV product placement works when it's endemic to the format and fails when it reads as an ad. The shows that convert — Shark Tank, Kardashians, Real Housewives, Selling Sunset — and the mechanics that separate a win from a miss.

Price-hike communication is now a reputation discipline — and the way restaurants explain a menu change feeds AI engine retrieval for years. Transparency, sequencing, and the four moves that work in 2026.
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