The short-term psychological effects on the mother of real-time ultrasound examination early in pregnancy have been evaluated. Primiparae were randomly assigned to one of two groups: a high feedback, where they saw the monitor screen; b low feedback, where the scan was accompanied by a global evaluation of progress. Women were assessed before and after examination. The results confirm the acceptability of scanning, with mothers in both groups displaying more positive attitudes after it. Significant between-group differences emerged with respect to self-reported emotional state and attitudes toward the scanning procedure. The results demonstrate the powerful effect of ultrasound on maternal attitudes. The implications are discussed in terms of studying 'at risk' mothers, along with the rationale for enhancing feedback at this stage.