"This is still very, very preliminary," said Butch Murphy, the communications director of the Pechanga Band.
"It's intriguing but still quite preliminary," said Dr. Nancy A. Rigotti, director of the Tobacco Research and Treatment Center at Massachusetts General Hospital.
"This is extremely preliminary," said Mr. Holland, the department's area manager at the lab.
"It's still very preliminary," said John Hoffman, a member of the search committee and a consulting producer for HBO Documentaries.
The results are still preliminary, said David Feil-Seifer, who ran the study, but suggest that the children spoke more often and spent more time in direct interaction when the robot was responsive, compared with when it acted randomly.
The retinoblastoma work is "very preliminary," says geneticist Stephen Scherer of the Hospital for Sick Children, who participated in the Li-Fraumeni study.
The team's dating results look good but are preliminary, says Henry Schwarcz, a geologist who specializes in dating methods at McMaster University in Ontario, Canada.
And even these correlations should be considered preliminary, said study leader Bindu Kalesan, director of the Center for Clinical Translational Epidemiology and Comparative Effectiveness Research at Boston University.
The UN team later published a preliminary report saying that sanctions against North Korea over its nuclear programme had been violated.
In February, a federal judge issued a preliminary injunction saying the facilities could not use deterrence as a reason to detain people seeking asylum.
