You walk into the interview room. You knock on the door, step through, make eye contact with the interviewer, shake their hand, exchange a quick greeting, and sit down. The interviewer asks their first question.
By the time you start answering, the frame for everything that follows has already been set. Not the verdict. Not the hire-or-no-hire decision. But the lens through which every answer of yours will be interpreted. Researchers have measured this, and the effect is real.
The Research
In 2000, researchers Tricia Prickett, Neha Gada-Jain, and Frank Bernieri at the University of Toledo ran a study that quantifies how much of an interview's outcome rests on the opening seconds.
Note: This study was presented at an academic conference. While widely cited in first impressions research, it was not published in a peer-reviewed journal.
The researchers videotaped 59 employment interviews. Each interview followed a structured format with around 18 standardized questions and ran 15 to 25 minutes. The interviewers were advanced psychology undergraduates trained over four to five sessions to conduct screening interviews. The candidates were psychology students who participated for course credit.
After each interview, the trained interviewers rated candidates across 12 attributes including likability, warmth, confidence, expressiveness, hireability, intelligence, and professional competence.
Then came the key manipulation. The researchers extracted just the opening of each interview, from the interviewee's knock on the door to 10 seconds after they sat down. The clips ranged from 20 to 32 seconds. They contained the entrance, the handshake, and the verbal greeting. Crucially, the clips were played with sound. The 47 naive observers heard the candidates speak. The verbal greeting was part of what they were judging.
The researchers then compared the strangers' ratings against the trained interviewers' assessments.
What about who actually got hired? Here the paper is careful: the naive observers could predict the trained interviewers' overall impressions of each candidate, but they could not predict which specific candidates the interviewers chose to advance. The first 20 seconds shape the lens. They do not, by themselves, decide the outcome.
Why the Audio Detail Matters
The clips had sound. The naive observers were not just reading body language. They were judging the candidate's tone, pace, energy, and the words of the verbal greeting. This is the mechanism speaking.app trains: how the first sentence sounds, not just how you stand.
The interview protocol opens with "Hi! I am ___" and "How are you doing today?" before any prepared question. The candidate's response, audible in every clip, is part of what observers used to form a first impression that anchored the rest of the interview.
What Else Predicts the Outcome
Two findings from the study deserve their own mention.
Dress matters. Attractiveness does not. How well-dressed the candidate appeared correlated significantly with the trained interviewers' final ratings (r=.30) and the trained evaluator's ratings (r=.38). Observer ratings of physical attractiveness, by contrast, did not predict either (r=.14, not significant). Looking the part comes from preparation, not from features people are born with.
Note-taking dampens the bias, but does not erase it. Prior research shows that taking notes during an interview reduces the influence of pre-interview impressions on the final evaluation. The trained interviewers in this study did take notes. Even so, their final assessments still correlated with what untrained observers picked up in 20 seconds.
Why First Impressions Stick
This finding plugs into a broader body of research on what psychologists call "thin-slice" judgments. Humans form impressions from minimal information quickly, and once formed, those impressions act as a frame. Confirmation bias kicks in: ambiguous answers get interpreted in line with the initial read. The halo effect spreads a single positive cue, like warmth or confidence, across unrelated dimensions. Once that initial frame is set, it takes overwhelming contradictory evidence to shift it.
The authors are explicit on this point: their results do not discredit the interview process. The interview still serves a purpose. But interviewer evaluations may be anchored by the first impression more heavily than anyone realizes, including the interviewers themselves.
Practical Applications
1. The Interview Starts Before the First Question
Your first impression begins the moment you become visible, not when you start answering questions. The walk into the room, the entrance, the greeting, and the way you sit down are part of the assessment. Prepare for these moments with the same intensity you prepare your answers.
2. Practice the Verbal Greeting
The audio matters. The voice you use for your first sentence ("Hello, I'm [name], thanks for having me") is being evaluated alongside your handshake and posture. A confident, clear opening with no filler words and steady pacing telegraphs competence in a way no answer to question five can match.
3. Nail Your "Tell Me About Yourself"
The first verbal content an interviewer hears is usually your response to "tell me about yourself." That was the first interview question in the Toledo protocol, too. This is your chance to confirm a positive frame or reset a shaky one. A crisp, well-structured response cements the read. Rambling here gives the interviewer permission to start filtering you out.
4. Dress for the Read
The study found that how well-dressed a candidate appeared was a real predictor of how interviewers rated them, even after accounting for everything else. This is good news. Dress is something you can fully control.
The Bottom Line
The Toledo study does not say the interview is theater. It says the first 20 seconds shape the frame, and that frame is hard to break. Strangers watching only the entrance and greeting can predict, with moderate accuracy, how a trained interviewer will rate a candidate after a 15 to 25 minute structured conversation. Your handshake, your posture, your tone of voice, and the words of your greeting are doing more work than people assume.
Put This Into Practice
Most interview prep focuses on the answer to question five. The research suggests the highest-leverage minute of preparation is the one you spend on the first sentence out of your mouth.
Interview practice in speaking.app helps you rehearse the verbal side of those opening seconds. Practice your greeting, your opening response, and your first answers until they sound the way you want them to sound. The AI feedback catches filler words, analyzes your pacing, and helps you sound as confident as you want to appear.
When the stakes are high, your voice and your presence need to work together.