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Tapping out smartphone messages using shorthand such as “btw” (by the way) or “tbh” (to be honest) may feel breezy and efficient – but a new study warns these and other common abbreviations may make it less likely to get a response. 

Whether you’re on a dating app or messaging with fellow gamers, it turns out that using abbreviations makes people believe you’re putting less effort into the conversation. They’ll find your message less sincere and not as worthy of a reply as the exact same text written in full. 

“Abbreviations imply informality and casualness – so we thought if somebody uses one, you might read that as a signal of closeness and be more likely to respond,” says study co-author Sam Maglio, a marketing professor in the department of management at the University of Toronto Scarborough and the Rotman School of Management. 

“We figured that was perfectly plausible and we found out that was perfectly wrong. An abbreviation makes the other party tune out.” 

The study, published in the , was based on the results of experiments in the lab and the field, survey data and archival field data.

One experiment examined Tinder conversation histories submitted by 700 users across five continents. Researchers calculated the percentage of abbreviations participants used in their messages on the popular dating app. They found that for every one-per-cent increase in abbreviations, average conversation length decreased by about seven per cent. 

When other Tinder users were surveyed, 80 per cent believed their matches wouldn’t care if they used abbreviations. But that wasn't reflected in the data – regardless of profile characteristics, topics discussed, message length or the sophistication of word choices. 

Another experiment focused on Discord, a messaging platform popular among young people. They sent almost 2,000 messages to members of a Discord channel dedicated to anime TV shows, asking for a show recommendation. 

“We set ourselves up to fail. We tried to find the most challenging arena for this effect to work: young people who live online – and it still worked,” says Maglio. 

The Discord messages were probing whether reactions changed based on the type of abbreviations used. That includes: phonological abbreviations that condense words based on how they sound, such as “plz” or “thnx”; acronyms and initialisms like “hru” (how are you?) and “ttyl” (talk to you later); subbing letters or numbers for words, as in “u 2”; and contractions, which shorten words by removing letters, such as “rlly” or “wud.” All forms of abbreviations were less likely to get a reply than their spelled-out counterparts on the platform. The only exception was for the messages that used phonological abbreviations (although this exception was not noted in a subsequent experiment).

In a virtual speed dating experiment, roughly 200 young Americans were paired up for five-minute dates. Half were encouraged to integrate words from one of two lists – an abbreviated version and a spelled-out one – into their conversations. Dates had a much greater desire to continue talking to non-abbreviated texters and viewed them as more sincere. More of their dates also offered to share their contact information to continue chatting after the experiment. 

The researchers’ lab-based tests yielded similar results – and the thousands of participants who participated in these studies all rated how much effort they felt were put into the texts, how sincere they felt the sender was being and how likely they were to reply.

The results were the same across the board: abbreviations meant less effort, less sincerity and a lower desire to reply.  

“It’s possible that some participants treated the sincerity question as a kind of general ‘good or bad’ evaluation,” says study co-author David Fang, a �Թϱ��� alumnus. 

“We mainly chose sincerity because it's important for relational building. Participants are taking a stab at defining what they perceive sincerity to be – for instance expressing genuineness in the interaction.”