Medium is the message: the channel of communication and the readiness for organizational change

Purpose This study investigates how the communication medium (mobile phone versus traditional paper letter) interacts with the volume of information (message detail) to influence employee readiness for organizational change. It aims to test the theoretical utility of conceptualizing the physical communication channel as a referent criterion that moderates cognitive and attitudinal responses. Design/methodology/approach A 2 (message detail: brief vs. detailed) x 2 (communication medium: mobile phone vs. paper letter) between-subjects experiment was conducted with 117 participants, representing early-career workforce entrants. Participants received an organizational change message varying in length and delivery method. Readiness for organizational change and objective knowledge acquisition were measured, with need for cognitive closure (NFCC) controlled as a covariate. Findings Neither message detail nor the communication medium independently predicted readiness for change. However, a significant interaction effect emerged: delivering a highly detailed message via a traditional paper letter significantly increased readiness for change, whereas the same detailed message delivered via a mobile phone actively suppressed it. Objective knowledge acquisition remained consistent across all conditions, indicating that the medium alters attitudinal judgment rather than the sheer volume of cognitive processing. Research limitations/implications The primary limitation is the reliance on a single experimental study utilizing a UK-based university student sample to proxy early-career professionals. Future multi-method research is required to replicate these interaction effects across diverse, multi-generational organizational environments and to evaluate the cognitive demands of emerging, multimodal digital channels. Practical implications Internal communicators must strategically achieve alignment between the communication device and the message rather than relying on assumed demographic preferences for digital channels. Despite the ubiquity of smartphones, utilizing them to deliver dense, detailed organizational change communication may inadvertently hinder employee readiness. Traditional, tangible channels, such as paper letters, retain significant psychological weight and should be deployed when communicating information-rich, complex strategic initiatives. Originality/value This research challenges prevailing assumptions regarding the preferences of the digital-native workforce by demonstrating that lean digital devices do not universally optimize communication outcomes. It advances the situational theory of publics (STP) by reconceptualizing the physical communication channel as a referent criterion. The study introduces the concept that the medium establishes a strict cognitive tolerance for message length, framing audience behavior through the lens of subjective judgment formation rather than discrete problem-solving.