Internal Validity in Research
{"Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS4 Windows", "Image DateTime": "2017:10:27 16:45:12", "Image ExifOffset": "162", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "300", "Thumbnail JPEGInterchangeFormatLength": "5400", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "2391", "EXIF ExifImageLength": "1597"}