"Rosenthal effect" meaning in English

{
  "etymology_text": "Named after Robert Rosenthal, co-author (with Lenore Jacobson) of the 1968 book Pygmalion in the Classroom.",
  "forms": [
    {
      "form": "Rosenthal effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Rosenthal effect (plural Rosenthal effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "parents": [
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          "parents": [
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      ],
      "glosses": [
        "Synonym of Pygmalion effect"
      ],
      "id": "en-Rosenthal_effect-en-noun-b3EVbe7V",
      "links": [
        [
          "Pygmalion effect",
          "Pygmalion effect#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Pygmalion effect"
        }
      ],
      "wikipedia": [
        "Pygmalion in the Classroom"
      ]
    }
  ],
  "word": "Rosenthal effect"
}

{
  "etymology_text": "Named after Robert Rosenthal, co-author (with Lenore Jacobson) of the 1968 book Pygmalion in the Classroom.",
  "forms": [
    {
      "form": "Rosenthal effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Rosenthal effect (plural Rosenthal effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "Synonym of Pygmalion effect"
      ],
      "links": [
        [
          "Pygmalion effect",
          "Pygmalion effect#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Pygmalion effect"
        }
      ],
      "wikipedia": [
        "Pygmalion in the Classroom"
      ]
    }
  ],
  "word": "Rosenthal effect"
}